Although one typically assumes they'll become a grandparent later in life, some lucky few get the rare chance to be young grandmas and grandpas - celebrities included. Stars like Whoopi Goldberg, Jim Carrey and Mick Jagger all became grandparents before the age of 55. In August 2025, former Bachelorette Emily Maynard learned she would earn the title of grandma at the age of 39 thanks to her oldest daughter, Ricki, then 20. Goldberg's daughter, Alexandrea Martin Dean, was just 16 when she got pregnant.