Nicole Miller silk ombré maxi dress

Cross back straps (that can be undone and re-attached to adjust size) with zipper closure. Open at back where straps are. Ombre purple and chartreuse. Worn once to a wedding. Disclosure: my heel got stuck in the hem and there is a tear at the bottom. I was hesitant to fix on my own. (See pics) damage considered in pricing. Is size 4 but I’m a 6 and it’s fits just fine. Not snug anywhere.