On 27 February 2010 , Cotillard was the Honorary President of the 35th César Awards Ceremony . She played Mal Cobb , a projection of Leonardo DiCaprio 's character , Dom Cobb 's deceased wife in Christopher Nolan 's film '' Inception '' , also starring Tom Hardy , Joseph Gordon-Levitt , Cillian Murphy , Ken Watanabe , Michael Caine and Ellen Page , which released on 16 July 2010 . Nolan described Mal as " the essence of the femme fatale " , and DiCaprio praised Cotillard 's performance saying that " she can be strong and vulnerable and hopeful and heartbreaking all in the same moment , which was perfect for all the contradictions of her character " . Cotillard and Leonardo DiCaprio ranked No. 8 on Forbes ' list of '' " Hollywood 's Top Earning On-Screen Couples " '' for '' Inception '' , which made US$ 825 million at the worldwide box-office . In the same year , she also starred in Guillaume Canet 's drama '' Little White Lies '' ( '' Les petits mouchoirs '' ) , playing the environmentalist Marie , alongside Jean Dujardin and François Cluzet
35th César Awards Ceremony
35th César Awards
Marion Cotillard