Meet the New Celebrity Babies of 2018

Jamie-Lynn Sigler and her husband, Cutter Dykstra, welcomed their second child on Jan. 15. "He's here," the actress wrote alongside photos of her newborn and her 5-year-old son Beau Kyle. "Jack Adam Dykstra we will talk about your tardiness eventually, but for now we've got a lot of love to give. Thanks to my besties for helping me laugh and smile and to my husband for just being my rock."