This is a brand new with tags dress by Jovani in a size 4.  Jovani recommends a size 4 for a 34" bust, 27.5" waist and 37.5" hips.  That being said, based on how the dress fits the mannequin it appears to be running large.  For reference the dress on the mannequin is the size 4 and the mannequin is typically about a Jovani size 6 and there is extra room.  This dress retails for $598!