When real things happen to imaginary people

Yes, I want the Marauder's Map leggings from Black Milk. I'm not going to be purchasing them any time soon, what with looming unemployment and all, but OH! How I wants them. I would wear them with a black velvet dress and petticoats.

Howeverrrrrr, hey jola? How does Black Milk's sizing run? Would someone who is a size 14-ish have any hope of fitting into their XL leggings? Their size chart indicates that I should be fine, but I am ... untrusting.