Most Helpful Girl
Depends on the establishment. If you're asking about guys' attire, I personally always liked it when a guy would show up in nice jeans and a tucked in button down oxford shirt. The guys I saw wearing that were all European and I thought the style looked great on them.
If you're talking about ladies' attire, I never go to a club without looking dressed up. Even if it's a casual club, that just means I put on a pair of skinny jeans instead of tight black leggings or a dress, and switch out my sexy red top for a more muted color. But it's just my own thing and of course I recognize that I'm a little over the top, lol.