Rihanna: Esquire's 'Sexiest Woman Alive'

Rihanna: Esquire's 'Sexiest Woman Alive': Barbadian singer Rihanna performs on stage during the Rock in Rio music festival on Saturday, June 5, 2010, in Arganda del Rey near Madrid, Spain.

(Dominique Faget, AFP/Getty Images)

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Singer Rihanna performs in Spain

Barbadian singer Rihanna performs on stage during the Rock in Rio music festival on Saturday, June 5, 2010, in Arganda del Rey near Madrid, Spain.

Jun. 5, 2010