Job interview outfit

Hi there, i am going in for my first job interview later this week. It’s basically to be a sales associate at a golf course/driving range. I am 17 by the way. The job is entry level, not a massive deal and mostly high schoolers have worked this position. The skirt and blazer I own are far too big for me. I don’t own any job appropriate skirt or any slacks. Do you think if I wore plain black jeans (skinny) and dressed it up with a button up shirt / nice shoes it would be ok? Please don’t yell at me if I sound like an idiot, lol. I just could use a little help.

Also, I’m really broke and don’t have the money for some super nice slacks. I’m also very petite so I could look at thrift stores but it certainly wouldn’t be an easy find at all.