What is considered appropriate attire while off duty?

This is mainly for my army counterparts. But everyone feel free to give your opinions.

By now, every member of the army that has reached their first duty assignment has heard/read about or both on the new grooming/dress standards sweeping every major installation.

My question is this; What do you interpret as appropriate/inappropriate dress standards while off duty on and/or off-post? We're not going to discuss grooming because we all know the grooming standards.

We don't need to discuss sagging britches and wife beaters as those two are automatically disgusting? And I don't have heartburn with a guy wearing his flat billed ball cap cocked to the side.

So, post your opinions.