Like Kryptonite
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Pairing | Kara Zor-el x Fem!Reader
Summary | Sometimes Kara's eyes are bigger than your mouth.
Words | 3k
tags | size kink, sex shop, use of "pretty girl" "mama (in a teasing way)" "big girl (in a playfully mocking way)" "baby" "pretty pussy" "little girl" "mommy", implied/mentions of body image issues, lingerie kink, body writing and body worship, strap-on referred to as cock, belly bulge
Notes | I didn't realize that in Woman of Tomorrow, not only is she bar hopping red planets because she's mourning, but it's also because she is celebrating her 21st birthday. Which is so cool. Also fun fact, both Kara and Millie are both 5'5. Because of this, the reader is short, which helps play into the size kink.
Note 2. Usually size queen refers to the one being penetrated, but I thought it might be a nice spin on things if Kara is still the one who is a size queen, but goes about it in the way of trying to convince you that you can take it. I might turn this into a kink exploration series like I did for Clark since size kinks are a relatively tame kink compared to others. I'll tag that original post here.
Note 3. I had a weak plan when I started this, but it quickly developed into Kara recognizing your insecurities about your weight and trying to reverse psychology you into thinking you are small by making you take ridiculously sized dildos until you admit they are too big. All the toys reference are from the lovely Darquepath over on Twitter. Love their designs so much and would love to shop their store. The toys mentioned are available at 7-7.5 inches but for the sake of the size queen prompt, I opted to imply they were more like 10ish inches.
Kinktober Day 18: Size Queen
Masterlist kinktober2025
"Come on, it will be fun." Kara teased, pulling you closer, dragging you towards the looming store.
The two of you had been out on a date; having spent the whole morning together, you had gone out for breakfast at one of the only all you can eat pancake bars that still served Kara, before getting coffee at a cafe and wandering downtown, when she spotted it. An adult toy store hidden underneath a comic shop. The whole building looking like a walking bad joke about nerds being secret freaks.
"I...Kara." You sigh, your gaze softening slightly at her wide smile. You weren't exactly putting up much of a fight. Barely even dragging your feet as she pulled you into the street.
She stopped in the median, her fingers hooking in your belt loops to tug you closer, tipping her head to look down at you, "Hey, we don't have to go in if you don't want to. I figured it might just be fun to look around. We don't have to buy anything if it makes you uncomfortable."
"No, I..." You let out a breath, leaning into her, shaking you head with a small smile, "No, it's stupid. Let's just...let's go. It might be fun."
She looked at you for a moment before nodding, "Okay, yeah okay. We'll leave the second you get uncomfortable, okay?" Nodding, you leaned your head on her shoulder, letting her drag you through the street once more.
Inside the store was nothing like you expected. Though to be honest, you didn't know what you were expecting. It honestly reminded you of those costume shops that pop up every year for Halloween. Decorated in a way that was just the right amounts of sexy and tacky to rid you of any discomfort you had. Like the store itself was telling you that it wasn't that serious.
The walls covered in lingerie of all different shapes and sizes. And like a costume shop, you could tell that most of it was cheap, meant to be ripped away for fun, but some items were quality. Baskets of accessories and boxes of toys decorated the shelves, lined up in a way that seemed almost like a difficulty meter. Like the deeper into the store you went, the more extreme and skilled the items got.
"See, it's not that bad." Kara murmured, pulling you closer with that ever-present teasing grin. "It's not going to bite you."
"No, but you might." You mumble under your breath, though she hears you clear as day, barking out a laugh.
"Hell yeah I do." She laughs, wrapping her arm around your shoulders, pulling you deeper into the store.
It didn't feel as weird as you thought it did, walking through the store with Kara. Whether it was because of Kara made the whole thing feel normal, or because the shop wasn't nearly as scary as you anticipated, you weren't as anxious walking around.
"Do you want to look at anything specific, or... just wander around for a while?" Kara asked, nuzzling her nose in your hair for a moment, peering down at you.
"Just wander. I don't... there's nothing in particular I'm...looking for." You mutter, shaking your head, the tips of your ears bright red. She leaned down, nipping the red tips, releasing a snicker when you squeaked.
Lacing her fingers with yours, she tugged you along, "Come on pretty girl, mama wants to look at new straps."
Your whole face erupted red, "Don't...don't call yourself that."
Her laughter filled the store, the sound almost taunting in a way, as she pulled you towards, quite literally, "The Sapphic Section". Dozens of different colored nylon strips, in every shade and color, were folded neatly. Baskets with O-rings in every type of metal sat below them; ranging from cheap metals like stainless steel and sterling silver, to more costly metals like titanium, and white and yellow gold.
Probably most horrifying, or rather, mortifying, was the display of dildos wrapping around them like an arch. In every shape, from realistically human to monstrous and anatomically impossible. In every color and size. And Kara looked positively thrilled.
"Okay, pretty girl, I know I said we wouldn't buy anything, but..." She glanced back at you, practically vibrating out of her skin like a child in a candy store.
"I..." You practically had your face buried in your hands, a distinct feeling like you were going to regret this fluttered through your body, "I...okay."
She all but screamed in delight, pulling you into her arms, pressing kisses all over your face until you really were burying your face in your hands, before bouncing over to the wall. Her eyes scanning everything with a critical gaze, fully determined that if this was going to be the only time you two ever came here, she wanted to make the most of it and make the right decision.
You left her to her analyzing, stepping away from the overwhelm of the section. Picking at your fingers, you wandered over to the lingerie section, since it seemed the most tame, and least likely to cause you to burst a blood vessel.
Your eyes flickered over the different fabrics, taking in the different styles. You had to admit that some of them were a bit gaudy to look at. So many straps that you weren't sure how someone put it on, let alone how they took it back off again. There were a few that were works of art. Intricate lace and steel boning, silk and floral accents.
A simple red number caught your eye. There was nothing particularly special about it. No intricate detailing, no gaudy straps. Compared to the other outfits on the walls, it was honestly rather boring. But something about it intrigued you.
"You should get it." You nearly jumped out of your skin when Kara appeared behind you, silent as ever, holding her bag of goodies like a trophy, looking at the red piece you were eyeing. "You'd look good in it. I love seeing you in my colors."
"No I wouldn't." You shook your head, glancing at the outfit once more before turning away from the wall of fabrics. "I am no where near small enough for that."
A look of something flashed through Kara's eyes, wrapping her arm around you, peering up at the outfit as she pulled you away, towards the door, "I think you are plenty small."
***********************
"Alright close your eyes. I have one last present for you." Kara exclaimed, hands moving to cover your eyes, leading you towards the bedroom.
Your friends had been over celebrating your birthday only a few hours ago, the last of them finally trickling out as the sun went down, leaving you and Kara alone. The two of you having spent the last hour sipping some expensive wine Bruce had given to Clark to give to you, and devouring the rest of your cake with a fork.
Which lead to now. Kara had gotten you relaxed and thoroughly tipsy before leading you towards the bedroom, a playfully glint in her eyes that should have been your first sign that she was planning something. But you followed obediently, letting her maintain her surprise and guide you through the house.
"Tada." She murmured, uncovering your eyes, her hands sliding down to rub your arms, resting her head on your shoulder.
Your breath hitched, as your eyes locked on the red set you hadn't stopped thinking about since the sex shop, "You..."
"I went back and got it." She confirmed, pressing a soft kiss along your neck, "I know you haven't stopped think about it, even if you tried to hide it. So I went back a few weeks ago and picked it up."
"But I-"
"But nothing. Now go try it on." She states, pushing you towards the bathroom, knowing nothing short of full privacy was going to get you into that lace.
With shaky hands, you picked up the outfit and went into the bathroom. Sitting on the toilet seat for a while, you sat there just staring at the fabric like it was going to jump out at you before finally willing yourself to strip out of your party dress and slip the fabric on.
You could't find your eyes in the mirror, couldn't look at your face. Eyes locked on the way the fabric fell over your body, and the barrage of feelings it incited. A buzz settling under your skin as your eyes raced over your skin, and you tried not to think about all the ways you felt fat or didn't like the way your skin pinched and folded.
"I can practically hear your thoughts from here, pretty girl. Get out here." Kara called, drawing you out of your thoughts. Licking your lips, you let out a small huff, pushing open the door. She smiled from her place, already naked save for the empty harness, on the bed, "See, I told you you'd look good in it. Come here, I want to look at you."
You stepped forward hesitantly, chewing on your lips as you inched towards the bed. Taking her hand when offered and climbing onto the bed, letting out a squeal when she yanked you under her. Her hands settled on either side of your head, looking down at you with a look like she wanted to devour you.
"Fuck, I knew you'd look gorgeous in it. Never had any doubts." She groans, leaning down to kiss you, dragging kisses along your jaw and down your neck. You squirmed beneath her, both because of her kisses, but also because of her words.
It was too easy to say that you didn't believe her. That to you, you didn't believe you were pretty, let alone gorgeous. Especially in something like this. Something that showcased how big you thought you were. But you also knew better than to voice those thoughts. Though that didn't seem to matter with the way Kara's head snapped up, as if she had read the very thoughts from your mind.
"What, you don't believe me?" She questioned, raising an eyebrow, one of her hands sliding down to grab your waist. "Guess I'll just have to convince you then."
She grinned mischievously, reaching over you to grab the bag beside the bed, "You see, I picked up some things, the first time we were there. And I was waiting, because I knew a day like this was gonna come along."
She sat back on her heels, reaching into the bag, "I... is that a spine?" She snickered at your question, setting the first toy down. The box read Hades and you tried not to gape when you read the size.
"You, pretty girl, get to pick which one we use." She states, setting down two other boxes, equally the same size. Hallows Cauldron and NightMare's Horn.
"I...you...those aren't..."
"Aren't what? Going to fit?" She mocks, her fingers already going to her harness to undo the clasps holding the titanium O ring in place. "I thought you were a big girl? A big girl could take these, easy."
A quiet whine slipped out of your throat, your eyes lingering on the toys. You knew she wasn't going to let up. She was baiting you, and gods if you weren't taking the bait.
"I... I can." You mutter, reaching for the one that seemed the least intimidating, the Horn. Your fingers trembling slightly as you open the box, letting out a small wounded sound when you pull the toy out, finding it nearly as long as your forearm, and nearly just as thick.
Kara let out a sound of triumph, "You make your decision, pretty girl?" Setting the other two toys back into the bag when you nod, setting it back on the floor and slipping the horn out of your hands. "I had a feeling you'd pick this one, so I already washed it."
Your eyes follow it as she fixes it onto the harness, swallowing as each of the clasps click into place. Kara's hand coming up to slide along your jaw, pulling you into a kiss, breaking your line of vision as she pushes you back against the pillows.
She let her hands wander as she kissed you, letting you grow pliant and relaxed under her hands once more. A weak groan leaving her when her hands brush over the thin waistband of your panties, hooking her fingers in it, before she stops and pulls back, "Mm-mm, nah, we're keepin' this on."
You tried to argue, only for your words to die on your tongue when she snaps the waistband, simply pushing the gusset to the side, pushing her fingers in with practiced ease. Your eyes fluttered as she started thrusting her fingers in and out of you, being at least kind enough to attempt to prep you for what she was going to put you through.
"Kara," You moaned, rocking back against her, already feeling that familiar coiling in your belly. Kara always knew exactly what to do to have you falling over yourself. She could take you from 0 to cumming in minutes when she was really determined, and it drove you insane every time.
"Shh, you're fine. I'm not going to let you waste your present." She teases, leaning down to kiss you once more, nibbling on your lower lip as she works a third finger into you, slipping her tongue into your mouth when you mellowed into her. "I gotta get you ready for my cock. Otherwise I might split open my big girl and we don't want that to happen."
"I can take it, Kara. Please, fucking need it, need you Kara." You plead, fingers digging into her shoulders as you tried rolling your hips. The pool of heat in your belly building as she hooks her thumb around to rub circles in your clit.
"I don't think you can, baby." She coos, watching the frustration build on your face while your orgasm builds in your veins. "She's tiny. This pretty pussy couldn't take even my tip."
You nod vehemently, clinging to her, "It can. I can, easy. Please, Kara."
She tuts, nipping your shoulder in retaliation for your useless pleading, her fingers just barely speeding up, pushing deeper, and you knew she wasn't going to let that toy come anywhere near you until you had cum on her fingers at least once.
"Kara!" You let out a loud keen as you came, clenching around her fingers and arching off the bed.
"Fuck, that's my pretty girl. You think your ready for my cock?" She grunts, slipping her fingers out of your core, wiping the mess on her cock. "Can't wait to watch you fall apart. Nothing but the best for my pretty girl's birthday."
Choked moans fell from your lips as she lined up and pushed in. Barely the tip and you were already getting choked up. Nails digging into her shoulders, little bloody half moons buried in the skin, healing immediately.
She reached down, sliding one hand under your knee, bringing it over her shoulder and let out a sound of approval, "Fuck, she's practically swallowing me and I'm not even a few inches deep." Her fingers brushed around the edges of your stretched core, feeling it strain against her cock, rolling her hips to push another inch through.
She was nearly halfway when you finally started whining and pushing against her, little tears dotting your lash line, "Kara...too much. It's too much." Your hands pressing at her shoulders and abdomen.
"No it's not, pretty girl. I thought you said you were a big girl? Thought you were too big for such a pretty set, that my cock would be easy?" She mocks, rolling her hips again, making you whimper. "Thought you said it was easy? Are you saying you lied? That you're not a big girl?"
You shook your head through heavy breaths, your hands scrambling for purchase, "I...no. I...I can...I can...I can...t."
She smirked, pinning your hands above your head as she fucked another inch into you, watching your belly bulge under her touch, knowing you were close to giving in. "Which is it, pretty girl? Can you or can't you? You're already half way there. You can take the rest, can't you?"
"Kara...Kara..." You keened and mellowed, hands twisting in the sheets, your eyes screwing shut.
Tears fell from your eyes, your mouth falling agape, drool dripping down your chin as she draws almost all the way out before snapping her hips, "Kara, Kara, is that all you know how to say pretty girl? Which is it? Are you a big girl or are you my little girl?"
"'m not... 'm not a big girl." You whimper, slurring your words as she fucked you, no longer trying to stuff more of her cock into you to make a point, instead fucking for pleasure this time, more than happy to bring you to a stutter. "Thought I was...b-but 'm not. 'm not."
Kara grins triumphantly, gripping your hips as she continues to slam into you, practically watching your brain melt under her touch, "That's right. You're my little girl. Just my little girl. My poor baby's gonna cum on mommy's dick."
You glanced down and screamed, watching her cock bully it's way into your pussy, belly bulging with every thrust, the outline of her cock damn near imprinted on your belly. Eyes rolling back as you came, hard. Head tipping back, clinging to the sheets as you arched.
"Oh fuck, pretty girl." Kara's hips stuttered as the image of you cumming on her cock, paired with the delicious friction the strap pressed against her clit, sent her tipping over the edge right with you. Her arms trembling as she gripped your hips, trying to stay upright and not crush you.
A needy keen echoed from your throat as she pulled out, leaving an empty gaping feeling in your belly, hands reaching out for her, trying to pull her closer, "Shh, let me take care of you, pretty girl. You did so good for me, did exactly what I wanted." Kara unbuckled the harness, tossing off to the side to deal with later, gently rubbing her hands over your hips, massaging out any tension.