George Pimentel/WireImage

WHAT SHE WORE At the Cannes Film Festival premiere of Madagascar 3, Watts wowed in a plumed Marchesa mermaid gown, more than 50 carats worth of Chopard diamonds and a sparkling clutch.

CELEBRITY: Naomi Watts

DESIGNER: Marchesa

TREND: Feathers

32 of 104

Naomi Watts

Naomi Watts in Marchesa