Roberts' babysitting present to Pitt and Jolie

Julia Roberts has the perfect wedding gift for newly-engaged Angelina Jolie and Brad Pitt - she will babysit their six children.

The Hollywood lovebirds announced their engagement earlier this month (Apr12), and Roberts, who has three children, was delighted to hear the news because she knows exactly what to offer the busy pair as a present.

She tells E! Online, "People are starting to ask me and put pressure on me. Babysitting. Yeah, that's good."

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."

No wedding date has yet been announced.