Just ask her out, maybe chew some gum or something.
The important thing to remember is, despite popular belief, going to see a movie is definitely NOT what you should do on a first date.
Go see movies with her as a friend or when you are further into a relationship, as a first date it is awkward, you cant really pay attention to eachother and if you try to say/do anything random people will yell at you to shut up.
tl;dr- movee not gud 4 1st date, is bad.