Stars gather to urge women to vote

Susan Sarandon, Vanessa Carlton and Rosario Dawson are among a host of stars teaming up to encourage young, single women to vote in America's upcoming presidential election.

The celebrities will appear at a September 13 event, which will feature entertainment and talks on feminism, politics and civic transformation, is sponsored by V-Day, Rock the Vote and Vote, Run, Lead.

Julia Stiles, Isabella Rossellini and Gloria Estefan are also due to attend.