Jumpin' Jack Flash! Mick Jagger to be a great-grandad?

Mick Jagger at GlastonburyBy Terri Schwartz
Zap2it
At age 70, Mick Jagger will become a great-grandfather for the first time. It's being reported that Assisi Jackson, the 21-year-old granddaughter of the Rolling Stones frontman, is expecting a baby in 2014.

Assasi is the daughter of Jade Jagger, Mick's daughter with Bianca De Macias. He has seven children total from four women, and two other grandchildren.

The Mirror hears from a source that Assasi and her chef boyfriend Alex are both excited by the baby news. The pair has been dating for more than a year, and Assasi is reportedly three months pregnant.

"She and Alex are thrilled and broke the news to their immediate families last week. Jade was a little taken aback at first, not least because it means she will be a grandmother by the age of 42," a source reportedly tells The Mirror (of London). "She's expecting some ribbing from her showbiz pals. Mick is delighted and has no qualms about being a great grandfather. He's been joking about becoming a great, great, grandad and still performing!"