Mila Kunis and Ashton Kutcher have recently returned from a week-long "babymoon" in French Polynesia, where the couple toured the island of Taha’a and even stopped to sign some autographs.

The hottest new celebrity vacation trend, a "babymoon" is a lavish trip expectant couples take together before the baby arrives — giving new meaning to the phrase, "what to expect when you’re expecting."

CLICK ON THE IMAGE FOR THE GALLERYMila's bundle of joy, which is reportedly a girl, is expected to arrive in the fall, but the That 70’s Show duo has kept tight-lipped about the official due date.

After the babymoon period was over, the couple arrived back in Los Angeles on Sunday, and headed off to Mila’s parents' house soon after.

Read more: Ashton and Mila's sweetest moments in photos togetherThe young celebrity couple was spotted wearing matching sweatpants while on their way to the family visit, with the Ted actress’ bump proudly on display in a form-fitting Under Armour tank top.

A source close to Ashton, 36, and Mila, 30, tells People that they are now in “the nesting phase.”

Other expectant stars who are said to have enjoyed a babymoon include Stacy Keibler, Hilary Duff, Kate Hudson and most recently, Rachel Bilson.