Honestly, I think Vic's preferred, actual personal style is either very casual, like in her hiking around Sweden gear where she looks truly comfortable, or it's pretty edgy and avant-garde. Neither of those translate well into day-to-day or evening royaling, so she's had to come up with other formulas. I also think she's REALLY trying to avoid giving the press and anyone else reason to give her attention because of her fashion choices. Whether they're super expensive, super attractive, or more than revealing of her body shape. All of that attention would be unwelcome to her, for varying reasons.
So she settles for suits, but unlike Leti's "bank manager" phase, she goes for suits that are fun/edgy in their colors and patterns AND tend to be bulky and more body-concealing. (Yay 70s!) When she's not going to meetings, she goes for floaty dresses with lots of fabric, length, ruffles, full sleeves. Plus the bows! In blouses and dresses. Neck bows are a political/social statement in Sweden, and she's wearing them for a point. She lets herself go the most for cocktail-ish occasions, like that truly dreadful red and black outfit and the pink explosion. Even her tiara gowns have been pretty bold statements, whether giant sleeves or the comforter (which I admit I rather loved). One of the rarest things to see her in is a simple sheath dress. She does it occasionally, but rarely.
All this boils down to a princess whose clothing doesn't look like anyone else's in the royal world. So in that respect, I think she's succeeded. She really does own her looks; they are designed to build her image of a Crown Princess who is engaged and busy but also not stuck in the past.