Hey, compare Believix to Enchantix. At least they're getting better.
Also, Enchantix is BY FAR the most extreme with exposing their bodies.
It's European, there's less of a taboo on clothes like that over here. And even then.... they're meant to be FAIRIES. I remember a definition of 'Fairy' in a book on folklore that describes them as wearing 'Sheer' clothes. At least, that's my explanation for Enchantix (And my personal dislike). Since it was meant as an 'Ultimate' stage, they were meant to be more 'Magical' then the more mundane and fashion-y first transformation. Believix is sort of a callback to the more modern teenage style. Not only do they cover more and are more inspired by the girls as individuals..... Only half of them have outfits that I consider to be a bit much (Bloom, Stella and Flora.) For the rest.... they're all wearing PANTS. Not even hotpants (Besides Roxy). Honest to gosh pants. (Is happy pants-wearer)
/my opinion on the transformation.
Abridged version: I don't see the problem.