Milli and her friends are invited to a royal ball where everyone dresses up like princes and princesses. Geo makes a butterfly tiara for Milli, but it ends up in the hands of the Troublemakers, who want to sell it at a jewelry auction. Can Team Umizoomi get Milli's tiara back in time for the ball?
- Milli's Princess Dress is an altered version of her Numberland Royal Court Dress.
Main Article: Princess Milli!!!/Transcript