How do you approach a girl when you have nothing in common?
I have many male and female friends that I share interests with and we can talk for hours.
But I've met this girl I like and she seems that she's only interested in nails and hair styles and things like that. I was going up the stairs with her the other day and it was one long awkward silence. Also I am really bad at small talk.
Anon is mean, but not wrong. "Like" implies romantic attraction. You don't like her. You barely know her. You just want to nut in her pretty mouth. She sounds shallow, man.
Just ask her what she likes. She likes herself. Get her to talk about that. It'll probably work.