Leonardo DiCaprio to testify against attacker in court

Leonardo DiCaprio is set to testify against a former model, accused of smashing a bottle into the actor's face at a party.The Titanic star will be called as a witness Aretha Wilson appears in court.Wilson, 39, is to be extradited to America from her home in Canada after five years on the run."She is going to be coming back to LA, but I just don't know when," the Daily Express quoted Los Angeles district attorney spokeswoman Jane Robison as saying. She confirmed that DiCaprio has been cooperating with prosecutors in Los Angeles and is willing to give evidence in court.Wilson allegedly attacked DiCaprio with a bottle at the party in the Hollywood Hills, Los Angeles, in 2004.The 35-year-old star needed 17 stitches for a deep gash on the right side of his face.Wilson, who had gatecrashed the party, which was being thrown by Pamela Anderson's ex husband Rick Saloman, told police she mistook DiCaprio for an old boyfriend and had been drunk.