Nobody pimps the pin ups like Milosh. IME with female skin you have to be extremely subtle, and if you're going to push the contrast you'd better get the lighting just right. In this regard, you are the master Milosh, and I look to your work for the examples needed. When I was just starting out I tried a female Samurai type from Wyrd and wanted a sheer effect. I followed the advice of numerous tutorials but it wasn't until I read your take on sheer that I got it right. Mix the skin tone with the fabric color, rather than glazing the skin color on top of the fabric color. Anyway, I bring this up because if you're a painter of the fairer sex, just look at Milosh 'do gallery and draw your inspiration from there.
If her suit is intended to be white, I think you could use a bit more highlighting. What I found with white is that yes, it requires the range of tones that you are so expertly using. But the highlight areas really need to dominate the structure. Leave your purest white for the highest spots, but keep a near pure white and use this as a mid tone almost, or the color that occupies the greatest area.