Los Angeles: Actress Julia Roberts says she has the perfect wedding gift for newly-engaged Angelina Jolie and Brad Pitt.

She says she will babysit their six children. Jolie, 36, and Pitt, 48, who have been together since 2005, announced their engagement earlier this month. They raise six children - Maddox, Pax, Zahara, Shiloh, and twins Knox and Viv.Roberts, who has three children, was delighted to hear the news because she feels she knows what exactly to offer the busy couple as a present.

"People are starting to ask me and put pressure on me. Babysitting. Yeah, that's good," femalefirst.co.uk quoted Roberts as saying.Congratulating the pair, she added: "Oh yes, it's exciting news. It's always nice when you're ready to hitch your wagon for eternity to somebody."