What do I wear when I am clubbing/partying?
For pants, you can’t go wrong with dark jeans or dark khaki pants.
On top, the standard collared shirt will serve you well (not tucked in, of course!) You could mix that up by wearing a sweater overtop. You really only want to wear a t-shirt if you can dress it up with a blazer (see Orlando photo) or perhaps a zip-up sweater.
Any other tips?