Mila Kunis Gushes Over Her Post-Baby Body

The actress discusses how pregnancy changed her physically and why she loves it.

— -- Giving birth to her daughter changed Mila Kunis's life.

It changed her body, too.

Kunis, 31, and her partner, Ashton Kutcher, 37, welcomed Wyatt Isabelle on Sept. 30. Having a baby, she told O'Brien, is "the greatest thing that's ever happened to me," though it has required her to buy a new wardrobe.

"First off all, I needed to start wearing bras," she said. "I always dressed for a flat-chested girl and, all of a sudden, I'm busty!"