Vintage Lip Service Gangsta Pranksta Waistcoat/Vest.

Lip Service – Gangsta Pranksta Waistcoat. It has the same distinctive construction as yours: wide lapels, double-breasted metal buttons, breast pocket, and D-ring hardware on the lower pockets. The archived example is pinstriped rather than solid black:

This is a rare vintage Lip Service piece that has been discontinued and is no longer available anywhere

Size: Large men's size