I don't know how to wear my hair for an interview I have 2 morrow, it's naturally curly but should I straighten it or leave it curly??

There is only one way to wear your hair - clean and shiny and comfortable. This will tell them more about you than you can.

Leave it curley
Lol
I only say that because I have curley hair

Be you. You'll be more comfortable.
I'd be more concerned with the anticipate questions that may be asked at the interview.
Like,
"What can you offer this company?"
"What skills make you a better choice than other applicants?"
etc...
Just be yourself