The Rolling Stones singer, Mick Jagger, has certainly proved that age is just a number.

The 72-year-old frontman is expecting his eighth child with his 29-year-old girlfriend. The musician - who already has five grandchildren and is a great-grandfather, has kids ranging in age from 17 to 46.

The news comes hot on the heels of Ronnie Woods' announcement two months ago that he's expecting another child at the ripe old age of 68.