My size wasn't available (large) so I ordered a medium just so I could have it in my closet. I'm 5'9 180 lbs (athletic build). My back is a little too wide for it to zip up but I can tuck in the flaps and have a deep v backless look.

Definitely need to size up. I always wear a small in FN dresses but I could not zipper this up. I’m 36-28-46 and 176 lbs with a b cup. Should have tried a medium. Will have return. Beautiful pattern though!