The actress loves dressing up in designer clothes to impress Francois-Henri Pinault and insists he is the reason she puts so much effort into looking her best.

She tells Lucky magazine, "If you're in love with someone, you always want to conquer them anew. Even if we don't go out, I like to look nice for him. He inspires me. There are men who don't notice what you're wearing, and that's cool. But when you make an effort, Francois appreciates it so much."

The Frida star admits the French billionaire, boss of PPR - the company behind fashion houses Gucci, Yves Saint Laurent and Bottega Veneta - is baffled by American trends, adding: "He's so funny - we were in line at the airport somewhere in the States with these four girls in front of us, and he asks me sincerely, 'This American style, with the sweatpants and flip-flops...?' And the feminist is coming out in me and I'm like, 'They're comfortable! Is it such a sin to want to be comfortable?'

"But he says, 'If they want to be so comfortable, why do they have so much make-up on at 7am?' And he has a point: People spend all this time with make-up and then not with clothes. Why?"