Jessica Simpson, Leonardo DiCaprio, Kanye West and Christian Slater were among the throng of celebrity sports fans who descended on the Staples Centre in Los Angeles for game one of the NBA Finals.

Jessica arrived clutching on to boyfriend Tony Romo and a $2,549 brown leather Alexander McQueen shoulder bag.

Attempting to keep a typically low profile was Leonardo, who strode purposefully past the paparazzi with his baseball cap pulled down over his face.

Once the game had started, however, the actor blew his low-key presence - and his cool, from the looks of it - by rising from his courtside seat and becoming very animated.

Christian, Randy Jackson and Andy Garcia made it a family day out by bringing the kids along.

Lauren Conrad, Tobey Maguire, Anthony Keidis and Benji Madden were also there to cheer the L.A. Lakers on to victory over Orlando Magic.