It's a strong competition for this year's Palme d'Or at Cannes.<br /> <br />But there are some contenders who already know how it feels to win the festival's big prize - including the Dardenne brothers.<br /> <br />The duo have won twice before and they're up for a third Palme d'Or with the film "Two Days, One Night".<br /> <br />It stars Oscar-winner Marion Cotillard, which is an unusual step for the brothers, as it's the first time they've used a big star in a movie.<br /> <br />SOUNDBITE Director, Luc Dardenne, saying (French):<br /> <br />"We knew that Marion wanted to become Sandra and that she had her own way to do it, which is not our business. We just had the desire -- and we manage to do that thanks to rehearsals -- to make her enter our world , if I can say, and let her bring the most she could to it."<br /> <br />The film sees Cotillard's character try to convince her work colleagues to forego their bonuses so she can keep her job.<br /> <br />And the actress says she worked hard to make her character credible.
