Credit: Eric Charbonneau/

According to Olivia Wilde, Jennifer Garner should never stop having children.

The 27-year-old actress, who appears with Garner in the upcoming movie Butter, tells Us Weekly that the expectant mother "should keep breeding" after she welcomes her third child with Ben Affleck this winter.

"She makes pretty babies," Wilde said at the Artios Awards in Beverly Hills Monday.

Wilde added that she hopes to work with more women like Garner in the future. "She was such an awesome costar and a wonderful producer," Wilde raved of the pregnant actress, 39.

"I've worked with a lot of the greatest guys in the business, and now I am slowly working with more and more women," Wilde added. "We don't really get to work together, the girls so much!"