Eloise at the Plaza (2003)

Eloise is a precocious but lovable six-year-old girl who lives in New York's Plaza Hotel. Her caretaker "Nanny" watches over her while her mom is away. Then one day, while trying to figure out how to get invited to a fancy ball as well as how to meet a visiting prince, Eloise makes a new friend around her age! So she decides to take him on a tour of the city - and all while plotting some matchmaking hijinks for her other friends too!