Beyonce Displays Cleavage at Boxing Event in Las Vegas (photos)

Beyoncee and her husband, Jay Z attended a boxing match at the Mandalay Bay Events Center in Las Vegas on Saturday night. 

The match was between Saul 'Canelo' Alvarez and Miguel Cotto and the singer was looking so sexy in her black gown that exposes most of her cleavage.

More Pictures... Check below...