It's outdoors I assume..fireworks mentioned by host. In Edinburgh.
My plan so far:
cashmere/wool long coat
hiking boots
woolen trousers
tights
two thermal vests and a sleeveless cardigan
peaked hat (bit of rain forecast)
nice scarf and brooch for vanities sake!
I assume its all quite informal and just dress for practicality:I don't own a puffer or I'd wear that!