Ashlee Simpson is celebrating a major milestone in son Bronx's life: his 16th birthday. And fans can't get over just how grown up he is — and just how much he looks like his dad, Pete Wentz.

Pete Wentz and Meagan Camper Share Rare Photos of Daughter Marvel Jane as She Turns 3 Meagan Camper Shares Rare Photo of Her and Pete Wentz's Daughter Marvel Jane, 2½ Jennifer Lawrence Supports ...