When you have seven kids, what's an eighth?

Mick Jagger is expecting an eighth child at the age of 72, Entertainment Tonight reported.

His girlfriend of two years is 29, younger than at least one of his children.

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Melanie Hamrick is an American ballerina.

Jagger's son James is 30 and is currently starring in HBO's show "Vinyl."

Jagger's other children are from four previous relationships. His most famous, a long-term relationship with Jerry Hall that lasted more than 20 years, and produced four children, before they broke up in 1999, The Washington Post reported.

He's not the only Rolling Stone who just became a dad late in life. Ronnie Wood became a dad again when his wife had twin girls in May. Wood is 68. His wife, Sally, is 38, Reuters reported.