(Cover) - EN Showbiz - Lindsay Lohan made A-list guests "uncomfortable" after reportedly crashing a party hosted by Leonardo DiCaprio.

The 25-year-old star managed to work her way into Leonardo's party in celebration of his newest movie J. Edgar, where she reportedly made a scene.

Lindsay allegedly "talked her way past security" at the Hollywood Roosevelt Hotel on Thursday night, before causing a stir amongst guests at the high-profile event.

"Lindsay was arguing with the security to let her in, dropping every celebrity's name to get in. She could be heard saying, I have to go and see Leo,'" a source told the New York Post.

"Eventually they let her in, but she made everybody uncomfortable. She was aggressive and random, storming around. She tried to get to Leo, but he was surrounded by his security and a posse of his friends.

"Clint [Eastwood] and Leo and Dustin Lance Black were talking, and Lindsay sent one of her aides over, demanding to get a photo with them, but security shooed them away."

The party was also attended by Ron Howard and Brett Ratner, to name a few.

A representative for Lindsay denied the reports.

"She did not crash, she was invited by a guest who attended the event. I am not aware of her asking for photos with Leo or Clint. She was never asked to leave," the spokesperson asserted.

Representatives for Leonardo declined to comment.

Lindsay is having a difficult time of late. The troubled actress has to turn herself in to jail by Wednesday to serve a 30-day sentence, for being in violation of her probation stemming from her jewellery theft case earlier this year. (C) Cover Media