It's actually very easy to get her autograph... Just send an email request to selenagomez@studiofanmail.com and include your snail mail address! The sad thing is, she doesn't personalize it.
I do have questions though! In what size envelope did you send your letter in? And if you sent her the wrong size envelope, will she supply the correct envelope by herself?
That's so awesome!!!!! Can you tell me in what size envelope did you send your letter in? And if you didn't send in the correct size envelope for her, does she send you a new one anyway?