Ballet?

Umm uh uh so I am about to start taking ballet tomorrow, but now I'm looking at the leotards and slippers and tights and I have NO idea what I'm supposed to be buying or looking for as far as style, shape, quality, fit... AHH! The sizes are even A B C and D instead of Small, Medium, Large and XL!

Do I even want to take this? What the heck, I'll go and see if I like it, I OBVIOUSLY won't have the clothes for tomorrow, but I'll see by the end of tomorrow I suppose. Damn.