Changing Hat

The Changing Hat is a magical hat that makes the wearer look like anyone the wearer names, even by accident. That hat itself changes depending on the form the wearer takes.

Zummi Gummi conjured it for Sunny Gummi to cheer her up, and Sunny used it to impersnate Princess Calla, so as to be treated as a princess herself, only to find it wasn't all that it was cracked up to be.