Uma Thurman shows off her effortless beauty in Cannes...

Uma Thurman (Reuters)

Uma Thurman talks to model Karlie Kloss and Dutch model Doutzen Kroes during the amfAR's 23rd Cinema Against AIDS Gala. (AFP)

Katy Perry poses as she arrives for the amfAR's 23rd Cinema Against AIDS Gala. (AFP)

Eva Herzigova (Reuters)

Rosie Huntington-Whiteley (Reuters)

Orlando Bloom (Reuters)

(Reuters)

Izabel Goulart (Reuters)

Paris Hilton (Reuters)