I definitely recommend starting a conversation organically with this girl and if you're getting a good vibe from her, ask if she wants to hang out. Definitely keep it casual.
If you're looking to get to know someone better, I don't recommend going to the movies. Sure, you're spending a couple of hours with her, but you can't talk to each other. On the other hand, as long as neither of you has to be home right after the movie, you could grab a small bite to eat afterwards, get to know each other better and you'll at least have the movie to fall back on if you the conversation gets stuck. But a better option would be to find a common interest and do something related to that.
To be honest she is out of my league I don't even think I'll talk to her. She is always around a ton of friends the popular people some might say. I mean I collect comics and have braces... she is a tall smoking hot blonde a grade ahead of me what chances do I really have?
The surest way to have no chance is to believe you have no chance. Don't believe this girl is out of your league. Doing so is the equivalent of tying your shoes together at the start of a race. No girl is out of your league. Not every girl might reciprocate your attraction to her, but no girl is out of your league.
Comics are awesome. Braces mean you're going to have awesome teeth when they're off. More people should get braces as teenagers.
Without a doubt, I would name Spider-Man's classic red and blue costume as the best costume in comics. It's beautifully designed. It immediately connotes the character's identity. And it's just plain cool looking.