What should I wear to orientation?

My high school orientation is next week. I was thinking about wearing some jeans with a white tank top and an oversized on up shirt. It's short sleeved and loose, Christina Milian wore the kind of look I'm thinking about at the end of Be Cool. (When the credits are rolling. Thats where I got the idea.) But I'm not sure if that's a "comfortable" look for something like this. Any advice is good, thanks!