If you like your dresses really tight then this dress is very true to size. I ordered the dress a little large b/c my size Medium was all sold out. The dress is very clingy so it worked out great that I ordered a larger size b/c it shows every kind of "problem" area you might have.  I am 5'4", 135lbs and the UK size 14 fits nicely from the bust up but I will have to get the length hemmed up as it is way too long for my short frame.