17 actors who played pregnant characters while pregnant IRL

Katherine Heigl did an incredibly convincing job of playing a pregnant woman in the 2007 Judd Apatow comedy Knocked Up, though she wasn’t knocked up in real life. However, not all stars strap on a baby belly when their characters are expecting — because they don’t have to! Here are 17 stars who were pregnant at the same time as the characters they played. Don’t miss Knocked Up‘s Lifetime premiere on Dec. 7!