Rachel Bilson attended Roberto Cavalli's star-studded 40th anniversary party in Paris last night. She wore a flouncy, leopard-print dress that looked like it was falling off!

So is anybody romancing the sexy brunette? Earlier this month a spokesman dismissed reports the actress is dating "Gossip Girl" star Chace Crawford, insisting they're just friends. The longtime pals sparked romance rumors when they were spotted getting cosy during a group dinner in New York City.

Bilson called off her engagement to actor Hayden Christensen earlier this summer. She has also been linked to Jake Gyllenhaal since the split.

The former "O.C." recently starred in two episodes of "How I Met Your Mother" and the film "Waiting For Forever" about a guy who is content to live his life without a job yet with the love of his life, a young actress.

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