Rockand Roll Hall of Famer Mick Jagger has become a great-grandfather. Assisi Jagger, 21, daughter of Jade Jagger, 42, announced to Hello! magazine that she had delivered a baby girl, without specifying a birth date or name. "The women in our family just tend to have children young; it runs in the genes," said Assisi Jagger, who lives in Cornwall, United Kingdom, with her chef boyfriend, Alex Key, 25. The granddaughter of Rolling Stones frontman Jagger, 70, added, "I grew up quite quickly and wouldn't have considered having a child if I was doing what my friends are doing at this stage, messing around. I don't drink, I don't smoke and I'm very settled."