Both Appleby and fiancé, chef Jon Shook, are keeping the baby's gender a surprise. "He really wanted to do it and it sounded like fun," the actress told the magazine. "It's really made the whole pregnancy a heightened excitement because you just don't know what it's going to be!"
Appleby, 34, is five months along with the unborn child, whom they call "Baby Shook" and has had a "really easy pregnancy," she told Us Weekly.
Appleby and Shook, 31, got engaged in July during a trip to Italy. Best known for her role on the WB teen alien drama, Appleby also starred on Life Unexpected and recurs on Chicago Fire as the pregnant ex-girlfriend of Shay (Lauren German).