Recently purchased this triangle bralette in 2 different colors, same size. One fit well and is pretty comfortable. The other felt too tight and was chaffing under my arms. I have purchased other bras from Boody before and have had trouble finding a good fit--I am very petite, 5'1" and wear a 30C bra, and yet I have to size up to a medium before it stops feeling too tight. This is 2-3 sizes higher than what their sizing guidelines suggest. Moral of the story is, their sizing is really inconsistent, but if you do find one that fits well, it's quite comfortable.