The stars will both give a talk for the Cambridge Union Society along with former Libertines frontman Carl Barat and retired ballet legend Darcey Bussell.
The mostly male line-up, which features Bussell as the only female speaker, has drawn criticism from students, but the Union Society's president Imogen Schon has now vowed to book more women.
She says, "We have a fantastic line up of individual speakers, but I do regret the current lack of women in their number. As a result, we have been focusing on inviting female speakers for the past three weeks, in the hope of addressing the imbalance later in term."
Previous speakers at Cambridge University include Sir Ian MCKellen, Clint Eastwood and the Dalai Lama.