Russell Brand is ready to have children.

The 38-year-old comic is smitten with girlfriend Jemima Khan - who already has sons Sulaiman, 17, and Qasim, 14, from her marriage to former cricketer Imran Khan - and is keen for them to get married and start a family together.

A source said: ''Russell has made no secret of wanting children. It's all he talks about. They are also planning to get married. But it seems that starting a family is Russell's priority.''

However, Jemima, 40, has not yet committed to his plans.

The source added to Britain's Grazia magazine: ''She is totally smitten with Russell but she's still got her head screwed on, so any future decision will not be taken lightly.''

The 'Despicable Me 2' star's desire to have kids was one of the reasons his 14-month marriage to Katy Perry broke down in December 2011.

The 29-year-old singer has since revealed: ''Russell really wanted me to have children and I knew I wasn't ready.

''I think it was a way of control. I'd have to be home more.''