Rachel Weisz Looks Sizzling Hot in Revealing Dress at Cannes

They are usually wracked with insecurities about their figures. But Rachel Weisz has a little more confidence than your average actress.The 38-year-old Oscar winner said she was happy to appear naked in her latest film - and never even dreamed of using a body double.Rachel, who stars as 4th century Greek philosopher and astronomer Hypatia in her new movie Agora, proved her point beautifully in a daring green Valentino gown split to the thigh at the Cannes Film Festival last night.

Rachel appears nude in two scenes in the film - one in which she emerges from a bath while her young slave, played by Max Minghella, attends to her with a towel.Asked if a body double was used for the revealing scene she responded: 'Absolutely not. It was all me, never even thought of using a double.Although I was thinking about baby fat - but I think most of it had gone by the time I went before the cameras,' she told the Daily Mail.

Rachel, who has a two-year-old son called Henry with her fiancé, American film maker Darren Aronofsky, added: 'I did some yoga, that helped, and just avoided junk food.'Earlier in the day she showed off her svelte figure in an olive green Christian Dior shift dress when she attended a photocall.