10 CROSBY DEREK LAM Navy blue short sleeve shirtdress, size M or L

Navy blue short sleeved dress with button up collar from 10 Crosby Derek Lam. Yellow/gold paisley pattern, brown buttons. This was bought at a sample sale, so there are no size or material tags in the garment. Fits like a medium or large, length goes to mid-thigh. I'm guessing approximately size 8, and the material feels like cotton.