I'm 5'4'' and about 120lbs, and I bought the XXS. They fit well, the material is very comfortable, and I am a fan of the design which has a darker color around butt and thighs. My only complaint, however, is a massive design flaw: they do not pass the 'bend over test'. Bend over, and your butt will be exposed... I really hope this is something that'll be addressed because this is my first Fabletics purchase and I had every intention to become a regular.