please help with movie title?

There was a movie I saw that was played on the Disney channel a while ago were the main character has a look-a-like who name is janeau Adams. She is a celebrate and one scene the girl who swapped lives with Janeau Adams has to walk down in a dress that cost 10k. She ends up ripping the dress since she can't walk in high heels that well. the designer clouw z said to her mom that Janeanu adams will never work with clouwd z again.

Now sure the name. First people to get me the name will best answer.