Jennifer Garner and Ben Affleck
Jennifer Garner and Ben Affleck are expanding their family. REUTERS

Jennifer Garner is pregnant for the third time. The actress and her husband, actor Ben Affleck, are thrilled about their growing family, the couple told the Associated Press Tuesday.

The couple already has two daughters, Violet, 5 years old, and Seraphina, 2. There's no word when the new baby is due.

Garner, 39, has starred in a handful of romantic comedies, including Ghosts of Girlfriends Past with Matthew McConaughey, The Invention of Lying with Ricky Gervais and Jonah Hill, and the star-studded Garry Marshall film Valentine's Day. The actress starred in the remake of the Arthur this year, but the film was a box office flop.

Garner will appear in the 2012 fantasy drama, The Odd Life of Timothy Green, with Joel Edgerton and Dianne Wiest.

Celebrity stylist, Rachel Zoe, who is also a new mom, has nothing but praise for how Garner manages to balance work and family.

I think the best lesson I have learned from her is how to balance both jobs - as a mother and as someone working in Hollywood - and how to really keep your priorities straight, Zoe told Hamptons magazine.

Garner is one of Zoe's exclusive clients.

She is an extraordinary, very grounded person who exemplifies how to be a working mother, Zoe added.

Garner and Affleck, also 39, met in 2004 on the set of Daredevil, and were married in 2005.

In September, Affleck gushed on The Ellen DeGeneres Show about being a family man.

When one of the vassals comes and points at something . . . I take orders from people that cannot speak. And yet still they are higher up on the food chain than I am . . . I am madly in love, I have the best family, Affleck told DeGeneres.