The daughter of comedian and television host Jimmy Fallon and film producer Nancy Juvonen.
Before her elder sister was born, her parents had tried for over five years to have a child. They eventually resorted to surrogacy.
In honor of his status as a relatively new father, Jimmy Fallon released the book Your Baby's First Word Will Be DADA in 2015.
She has an older sister named Winnie Rose. Both children were born through gestational surrogacy.
Her parents met on the set of Fever Pitch and began dating after Drew Barrymore invited Fallon to a birthday party she was throwing for Juvonen.