Thoroughly Modern Millie Auditions?

In reality you are too young to play Millie, but if the rest of the cast happens to skew young then I suppose you could get it. Miss Dorothy is slightly younger than Millie, so that is also a possibility. It all depends on your vocal range which part you are better suited for. There are plenty of good chorus roles for young girls that can dance, and you would get to do some great songs (The Speed Test, Not For the Life of Me, Forget About the Boy). Its a great show, and you will have fun no matter what part you get.