They are not only popular for their drop-dead looks but also remarkable acting chops. And going by their filmography, it's apparent that they aren't afraid of experimenting or seeking new challenges. Interestingly enough, the same is true when it comes to things off the movie set. After all, they may have portrayed the role of a mother on the big screen, but this is the first time they are looking forward to motherhood for real. hitlist looks at some soon-to-be-moms.

Rachel Bilson

The OC star and her boyfriend Hayden Christensen expect good news — a baby girl. Last week, they were spotted shopping for baby clothes at a maternity store.