Jessica Simpson And Jared Leto?
One onlooker added: "They were hanging all over each other."
Leto - who is best known for his roles in Panic Room and the cult 90s teen drama My So-Called Life - has previously dated a bevy of famous beauties, including Cameron Diaz and Scarlett Johansson.
However, Simpson's spokesman denies the 25-year-old blonde has added herself to that list, saying: "Jessica is not dating anyone. She is single. There is no truth to these rumors."
Jessica Simpson picture gallery
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