I don't know what to wear

Here's some background.

I'm an 18 year old kid, just out of high school, I strongly dislike my current job and am looking for some new opportunities in life. Anyway, I applied to a company for a thing I've never done, which is exciting. I have an interview at said company tomorrow morning at 10 AM, and they requested I wear "business attire". Now, call me unqualified, but I don't really have any "business" attire, and I'm a poor 18 year old.

All in all, I'm asking if a button up shirt and a tie will suffice as "business attire," or do I absolutely need a suit and tie?

Thank you for any advice.

usa jobs
usa jobs resume
usa hotel jobs
usajobs
usa jobs federal government
usa job in ksa
usa jobs
usa jobs login
usa jobs gov
usajobs.gov
www.usajobs.gov
usajobs.com
usajobs
usajobs.gov official