Milli and her friends are invited to a royal ball where everyone dresses up like princes and princesses. Geo and Mario makes a butterfly tiara for Milli, but it ends up in the hands of the Troublemakers with Wario and Walugi who want to sell it at a jewelry auction. Can Team Umizoomi And Super Mario Bros and Princess Peach and Yoshi With Luigi and Bot and the Sprixie Princesses get Milli's butterfly crown back and in time for the ball and dance to Space Dancing What's This Button For?
Milli's Rainbow Princess Dress and Her Butterfly Wings is an altered version of her Numberland Royal Court Dress
Main Article: Princess Milli/Transcript