First off, Measurements: 39’ Bust (30DD) 27’ Waist and 39’ Hips. 107 lbs and 4’9. I normally wear a FN S and no problem but this time this dress has 0 stretch. If you want movement and don’t mind altering -size up. if you want snatched get your normal size. There is a nude material underneath the bedazzle fabric that loos like it’s see through but it’s not… just don’t wear any dark undergarments. Other than that this dress is absolutely flattering!