Meeting son's girlfriend for first time

I am meeting my 18yo son's girlfriend for the first time tomorrow. They've been dating for about 6 months. He's very private, for those who may think it's unusual that it's been this long. (I don't usually meet his girlfriends until he thinks it's pretty serious, and I'm fine with that.) She is 17.

Should I bring a small gift? Would that be too much? I think I'll really like her, so I think I'd like to. She seems like a pretty typical teen girl. That said, I don't know a whole lot about her (we do follow each other on IG) other than she likes to hang out with her friends, go to movies, goes to church, listens to music, is in orchestra, wants to be a teacher.

Thanks 💗