I ordered this in a 4 (34b, 140lbs., 5'8") because it looked like it would run big, and it definitely does! the 4 fit comfortably but the cut of this dress made me look about 10 lbs. heavier than i am. i am pear-shaped and this dress made me look very bottom heavy, so i returned it. that said, the material is gorgeous!, as it is the perfect weight and the colors are much more striking and complementary in person. if i had a straight(er) silhouette and a larger bust, this dress would have been a