Baby Kunis-Kutcher is almost here! With just days to go until Mila Kunis is due to welcome her first child, the pregnant star is "nervous about the birth," sources tell Us Weekly

The actress, 31, is expecting a baby with her fiancé and former That '70s Show costar, Ashton Kutcher. The pair got engaged this past February after two years together. 

PHOTOS: Mila Kunis' Pregnancy Style

Kutcher, 36, has remained by his future wife's side during her pregnancy, taking her out for ice cream and hamburger dates and working with her to prepare for the arrival of their little one. The movie star couple "has completely finished the nursery" in their $10 million Beverly Hills mansion and they are making changes in their personal life before two becomes three. 

Back in May, Kutcher got into a minor accident during a motocross race. A concerned Kunis has asked the dad-to-be to cut down on risky antics, an insider tells Us. Kunis wants him to "stop being such a daredevil," says the source. "With the baby coming, Mila wants Ashton to be a lot more careful."

Both Kunis and Kutcher are also spending less time socializing in the final term. "She's tightening the amount of people who come through their house," another source says. "Ashton has a group of guys who like to hang out — and some of them can be a little much! So it's just close family and friends now."

For more on Kunis and Kutcher, watch this week's Hot Stuff video, as explained by Us Weekly entertainment director Ian Drew and Joey Healy, a celebrity eyebrow stylist and star of Bravo's The Singles Project.

Other stories in the roundup: Mariah Carey's life after her separation from Nick Cannon, Joan Rivers' final days, and more.