Actually, when I was rewatching the scene where Nehelenia gets redeemed in Stars, my mother was with me and mentioned: "their clothing has a lot of sexual appeal."
And she's a woman almost in her sixties. The fact that they're a bit too sexualized for teenage girls is not any news and the reason the 90s anime gave them body proportions more "grown-up" than the manga was to make it more appealing for men. The audience of this live performance of "Moon Revenge" from Christmas' 93 speaks for itself.
And I'd go even further: if Crystal kept the same body features as the old anime, it would probably be more popular. While the original anime created a pattern for the portrayal of teenage girls in the Japanese animation industry, Crystal goes against a trend the franchise itself set.