Holy smokes! This outfit is the definition of comfortable! It's thin and airy, but not in a *bad way*, more in the...I could dance all day in the summer heat comfortably way. There is a good amount of stretch, but the outfit moulds to your body wonderfully without any sag. Beautifully made!
[For reference: I'm 5'3ish & 124lbs. Got a small in the top and bottom of the camo set.]