This Romeo Gigli Bodysuit checks off all of the boxes.  Perfect for the evening, under a blazer for work, or summertime fun.
 
It is a very light crushed velvet fabric.  It has a low back, and a fun rhinestone zipper up the center front.  There are 3 snaps for closure at the crotch area.
 
This bodysuit has stretch to it.  I would say it would fit a small- large.  Please see measurements to confirm sizing.
 
22'-32- waist (with stretch)