Which Young Celebrity Mom's Adorable Kid Wore Tiny Uggs? (PHOTOS)

Hidden under that big head of curly blond hair is Ashlee Simpson’s 4-year-old son, Bronx Mowgli Wentz. (Yes, from The Jungle Book.)

This adorable pair strolled the streets of New York City yesterday, and her little guy is holding a new Lego set after visiting the brand’s flagship store in Manhattan. Aww!

Our favorite part of the picture is his ridiculously cute, fun-size Ugg boots, though!

Did you know it was Bronx? Tell us below, and then click here to play more “Guess Who?”