Rent Uptown Girls (2003)

Molly Gunn (Brittany Murphy) is a partying rock 'n' roll princess whose money just ran out. Ray (Dacota Fanning) is a fussy eight-year-old whole last nanny just ran out. Ray's way-too-busy mum thinks hiring Molly would be the perfect set up! The unlikely pair face everything from control issues to temper tantrums and discover that sometimes your best friend can come from the place you least expect!