Concert Outfit Help?!!?

For Katy Perry. Should I dress normally, as in a skirt or dress. Or should I make a fan shirt? What do most people do? If I make a fan shirt Im going to write Katy Perry on the front and "Oregonian Gurls are so hot theyll melt your popcicle" On the back. If I dress normally Im just going to wear a loose shirt with a pencil skirt. So yeah, people who have gone, do fans wear homemade shirts or do they just dress normally?