The actress already has two daughters

Former Cosby kid Lisa Bonet is going to have a kid of her own.

The "Life on Mars" star and her boyfriend Jason Momoa are expecting their second child together, reports People.

"I'm seven months and I feel great," says Bonet, "I've had a tremendous amount of energy, which is lucky, because I have a 14-month-old."

This will actually be the actress' third child. She has a 19-year-old daughter, Zoe Isabella Kravitz, with ex-husband and singer Lenny Kravitz. Lola Iolani Momoa, born in July 2007, is her daughter with Momoa, who she's been dating for two years.

Bonet, 40, has no plans to find out the sex of the baby.

Bonet is best known for playing Denise Huxtable, the artistic daughter on "The Cosby Show" and later on the spinoff "A Different World." On "Life on Mars," she plays Maya Daniels, the present-day love interest for Det. Sam Tyler (Jason O'Mara).