Jenny McCarthy, actress, activist and mother is ready to take on a new role: Grandma! She won't be a grandma in the biological sense, but the long-time girlfriend of Jim Carrey says she considers his pregnant daughter Jane like her own daughter. The 37-year-old related how Jim told her, "If I'm a grandpa that makes you a grandma..."

Her reply? “I’m going to keep in shape and youthful, so ‘Grandma’ sounds pretty good.”

She was quoted in Access Hollywood saying of Jane Carrey: “I’d consider her my daughter. I love her to pieces.”

Jane and her husband Alex Santana are expecting a baby boy in March.

Anyone out there a young grandma? How do you feel about it?