This is the rule of thumb: you can leave the house in your pyjamas if your footwear is good enough. It's not something that should be recommended, but it's entirely possible if your choice of shoe is of a certain quality. Admittedly, the shoes in question will set you back several hundred pounds, but they will last and, more importantly, turn heads.
The evening was planned as a retrospective of the album that changed everything for British music. Never Mind The B******* sprang angrily into life in 1977, an original musical work that openly criticised a culturally cobwebbed United Kingdom. But the organisers do not get politeness this evening. Instead they get cat calls and verbal threats.