What IS professional attire??

So I’m signed up for the job fair and I have a question on what I should wear. I was told to wear “professional attire” but what does that really mean? When I worked at Subway that meant a subway shirt and hat.. I want to make a good impression here but I can’t afford buying a new suit for this. That’s why I NEED a job!!! Thanks in advance.

Follow recommendations
Loading Suggestions