At evening dos in Britain where all/part of the evening is outside.
I have done two parties in a row now where I went dressed in the right temperature clothes (ie sandals and a light weight summery top) and from about 7:15 started to deeply regret my clothing choices and wish that I had worn some sort of technical down coat/ thermal undergarments/ boots with thick woollen socks.
And I don't think a cardigan would have cut the mustard. It was bloody freezing last night.
Yes I am nesh.