This is a nice materials enabled dress from Paisley Daisy. It comes in fitted mesh for standard sizes with specific fitmesh for Belleza, Maitreya, and Slink, and is a group gift. Paisley Daisy is L$100 to join.
I really like the rounded neckline on this as it gives me an opportunity to show off my emeralds that were a gift from Aeon. She spoils me sometimes! There are matching earrings too, which you can just see in the picture below.