Pinkie is watching her. Closely. It isn't until Sunset is fully absorbed with what she's doing that Pinkie just... slooooooooooooowly pushed a very intricate and carefully designed cupcake right into Sunset's field of vision, the little cake appearing to have Sunset's own face on it in an uncanny level of detail surrounded by impossibly tiny orange hearts, the pink woman looking at Sunset with a wide smile. (From pinkbubblloons)
Sunset stared blankly at the cupcake... monstrosity? Masterpiece...? Yeah, she'd go with the latter. She stared at the cupcake masterpiece in awe. It was... astoundingly detailed. Like a photograph captured in frosting.
"...Pinkie, you know it makes it really hard to eat a cupcake when it would feel like cannibalism. Really good work, though! I don't know how you captured my eyes so... vividly."
Seriously, it was like the cupcake was staring at her.