Yzma is the Best Princess! Yzma (Emperor's New Groove) as Ariel, Belle, Esmeralda, Jasmine, Cinderella and Jane.<---Jane & Esmeralda arent princesses arent princesses. But the fact that Yzma was used to replace them is worth all the LOLS!
I always thought it was referencing beauty and the beast. Cause the same things happen in beauty and the beast. In Aladdin it's not a spell. It's just a genie with magic. In beauty and the beast it's actually a spell on the castle.