This babydoll looks so beautiful, elegant, and sexy in the product photos, and I was really excited to order it.  I'm 5'5", 140lbs., 34C-28-40, and I ordered the Medium.  Unfortunately, when I received it and tried it on, several problems caused me to make the decision to send it back.  The fabric is decent, though not as sheer or silky as it looks online.  The cups are a soft stretch mesh with the pleated chiffon overlay, which is great, but they are shaped wrong--the sides are loose, while the center is tight. Also, one cup is actually over an inch wider across the bottom than the other, causing the extra fabric to flare out on that side!  The pleats are a little bigger than the photos show, and those on the sides are not exactly vertical, giving the babydoll an odd rumpled look; meanwhile, the front pleats all tend to gather in the center. The back of the empire waist is elastic, but the front is not.  The matching panty is a string thong in the stretch mesh fabric, which is nicer than the typical basic g-string, and it does have a cotton gusset.  If you still think you might like this style, here are some measurements: the empire waist stretches from about 26" to 36", and the length down the center front is 16".  The panty stretches from about 25" to about 42".  If the cups had been the same size and shaped a little better, I'd likely be keeping it, as it fit well otherwise.