Purchased a Medium in Nude.  Fits like a glove!
 Definitely see through, but thin material doesn't hold in heat too much.

The stomach panel is thicker and holds you in well.  I wish the whole legging was as thick and compressing as the stomach panel or if the panel was a little longer to get more of my lower belly, but still works great.  Smooths everything out!

Average body type
5'5" - 145lbs - 28" waist