The interpretation of this is unique for each person. And we will cut some slack for first timers.
Nevertheless, we insist that you make an effort. We have good changing facilities so there is no excuse.
This need not be expensive!
In Preston, the market has a lot of good military gear and the Oxfam vintage shops usually has some good stuff.
On line, try the sellers in out shops section or eBay.
Afterlife is not a vanilla club. The dress code is enforced. Troublemakers are ejected.