I tried this on in the store in a size 4, and it was too tight. i'd need a 6 or possibly a 8, if i wanted a little room. (the store didn't have either.) though it was too tight, it was very flattering and more comfortable than i assumed. the neckline is a little awkward. the front straps of my racerback bra peeked out the sides. this might not be an issue with a bigger size.