The remote fishing village of Volendam, near Amsterdam, was popular with artists in the 19th century. Here, the 17th-century Hervormde church can be seen in the distance, and beyond that, the masts of the ships moored in the harbour. Elizabeth Forbes made several trips to the area. Inspired by French artists, she liked to paint everyday scenes outdoors. Forbes was a Canadian but lived in Newlyn, Cornwall, and where she was a leading member of the Newlyn School and co-founded the art school.
Rosalina got a lot of variants in this game, not including her base form or Baby Rosalina, she has nine. Mario and Peach I believe are the only other characters in the game that have more variants than her (unless you count all the Yoshi/Shy Guy/Toad colours, but those are technically different characters). Although this is unsurprising given that she's a fan favourite.
Not including base Rosalina or base Baby Rosalina, I'm gonna rank each of her variants. I'll rank these based on creativity, looks, and whether they fit Rosalina as a character in both look and purpose.
Last Place: Tanooki
This variant isn't outright terrible, I don't think Rosalina has a single bad variant, but this one is firmly in last place.
For one, it's not very creative. It's not a new, unique design, it's a powerup form taken from a main series game. Secondly, it looks kinda silly on her. Goofier characters like Mario, Luigi, or even Peach can pull off a look like this, but given that Rosalina is a more serious character, outfits like this are kinda awkward on her. Besides, she can already fly so it's not like she'd ever canonically need this powerup anyway.
Cat
Again, it looks kinda silly on her, but I like that it's black (with a slight blue tint) instead of aqua blue. Darker colours suit Rosalina, and honestly just make her look cool...as cool as she can look in a cat suit anyway.
Fire
Like the Tanooki and Cat suits, it's not very creative as an idea given that it's just a powerup form (I'd argue it's even less creative than them design-wise since they just make her dress and earrings red). Unlike the Tanooki and Cat suits, however, she at least doesn't look silly wearing it.
Fun (but unnecessary...funnecessary) fact, I used to nickname her Fire Form "Mrs Claus" when I played as her in 3D World as a kid because of the colour scheme.
Chef
It's not badly designed or anything, I just don't think a chef outfit suits her. I don't think she'd dress up to cook, it seems a bit too playful for her to do. Maybe it's the hat or something, the outfit looks a little too cutesy for her. I think an outfit like this fits Peach more, being a fashionista (and baking) is more her thing. Oh well, at least it's an original design.
Volendam
It's Rosalina in a traditional Volendam costume. I could see her gardening in this, wanting to learn about and experience some culture. Although I can't give it a lot of points for creativity, given it's based on real life outfits, it is pretty cool that this variant incorporates real Netherlandish culture. Otherwise...it's OK.
Aurora
I know people love this one, it seems to be the fan favourite costume of hers from this game. I agree that it's pretty, but I think it's slightly overdesigned. I'm also not sure when she'd ever wear it? To see an aurora? I know she loves space, but again, I don't see her dressing up just for that, especially something so intricate. Maybe she'd wear it to a fancy party, but...would her usual royal gown not do? Her main outfit is noticeably looser and a little more simple than Peach and Daisy's, being more of a nightgown. This fits her since Rosalina is meant to be a character that is cold of the outsight yet offers warm, motherly comfort, hence her outfit is reminiscent of nightwear, something comfortable to sleep in.
Swimwear
Iiiiiiiiiit's a beach outfit!
Yep.
It's an original design. Colour scheme fits. It's not overdesigned. It seems like something she'd wear while swimming or on holiday (maybe in Beach Bowl Galaxy?) The flower is a cute touch. I like that it shows less skin than Peach and Daisy's swimwear outfits (I'm not sl*t-shaming, this actually happens a lot, I made a post about it).
This variant's nice...next.
Detective
Yep, it's this high! Why? Well one, Rosalina dressing up as a child makes more sense than her doing it as an adult (not that adults can't enjoy dressing up, I just don't think it suits Rosalina as a character).
Two, I also like that the magnifying glass resembles her future wand and brooch. Very clever design choice.
Three, and most of all, I like what this variant says about her character. I like that this outfit emphasises her brain. I like the idea of her pretending to be a detective as a child, it's fitting given how wise she'd grow up to be, and implies that she was a precocious young girl. I think this was intentional, given that they doe something similar with Baby Peach. They give her a Cherub/Cupid variant, which fits how loving Peach would grow up to be. Design-wise it could be more creative, but I really like the concept.
First Place: Halloween
This outfit has everything I could look for in a Rosalina variant!
Design wise, I like the darker colours (the purple not only goes nicely with her fingernails, but is also reminiscent of the inside of her bedroom) and although it could look more distinct from her main outfit, it's different enough so that it's doesn't seem lazy (shorter sleeves, it covers her shoulders, etc.) The little blue bow is cute but not too cute whilst adding some blue to the outfit, making it fit her all the more.
This variant is meant to be a Halloween outfit, and sure Rosalina herself wouldn't go trick-or-treating, but I absolutely could see her taking the Lumas to go trick-or-treating on Earth. You can't see whilst she's front-facing, but the back of her render has large blue stitching, making it look homemade, and the use of her wand supports that idea. I love how this outfits utilizes her wand, using it to complete a witch outfit is both fitting and creative! Also, Rosalina built most of the Comet Observatory herself, so it's easy to believe she'd make a pretty good DIY costume.
So yeah. It looks good, it's original to Mario Kart Tour, it's look and purpose fit Rosalina as a character, and utilizing her wand to complete the costume was a creative choice. All done on their first try (this was Rosalina's first alternative outfit in the game).