Have you seen this "try it on" feature at Milly NY?
You just upload a picture of yourself. I didn't upload one of me in my underwear, because who knows where it could end up? I used this photo of me in my bustier dress.
Then you can select clothes from the Milly Shop, place them over your photo and resize them both horizontally and vertically to fit. Of course, I can't get it to fit both top half and bottom half at once, but it certainly gives a good idea of colour and shape. Lots of fun. Go try it on!