The Most Glam Night of Cannes: amfAR Gala 2013Jessica Chastain, Rosario Dawson, Heidi Klum and more stars turn out in gorgeous designer creations at the annual amfAR fête

ROSARIO DAWSON

There's nothing boring about Rosario's black Vionnet gown thanks to the super-high slit, ultra-low neckline and embroidered design at the waist. She accessorizes the look with on-trend white pumps.