Rachel Bilson was "more interested" in Karl Lagerfeld than Baptiste Giabiconi during a shoot.

The 29-year-old actress worked with the CHANEL designer and his male model Muse to film a recent advertisement and although she acknowledged Baptiste is gorgeous, she only had eyes for Karl.

She said: "Apparently he's a very big model. I knew who he was from shows and walking - he's always with Karl. He was really sweet too - obviously a very good-looking person. He's so young! He's only 21."

However, she admitted: "I'm more interested in keeping in touch with Karl!"

The petite brunette also confessed she was so star-struck by the German designer she kept a notepad he had written on - and refused to share it with a friend.

She told New York magazine: "He was so funny - he was writing down something on this Chanel notepad, and he was like, 'Do you want it?' And I took it so fast he laughed at me, so I got a Chanel notepad from Karl.

"And my friend was with me - she was like, 'Can I at least have a piece of paper from it?' I was like, 'Absoluely not.' "