After reading the reviews I sized up and went with a 6 when I normally wear a 4. The 6 fit fine, would have liked to try the 4 to compare, but only the 6 was available for prime shipping so what can ya do? My measurements are 32D, 26, 38, 5'4, 127lbs. The dress was long even with 3.5in heels which resulted in me just parking myself at the bar instead of the dance floor. Still, this dress is amazing and I highly recommend it!