I normally wear a 6 and based on what other reviewers said, I sized up to an 8. The top part (chest) was slightly too big, though. I'm 5'3" and the bottom of the dress hit me just above the bottom of my knees. Overall, I was very pleased w/ the construction and fit of this dress. I only had one option available for dress sizes and based on other reviewers, I ordered it and hoped it fit. I was also limited to receiving it on the day of the event, which made me a little nervous. But, the RTR reviewers and staff did not disappoint - it came on time and fit! I will definitely be returning to RTR and telling my friends about it!