2001, not a prom but a party in the room above the ice arena.
I wore an outfit I knew I would wear to go out out in, and we left after the buffet to go to the pub instead- oh the good old days!
Not these colours, but it will have been an asymmetric top this shape, possibly with a slogan, some bootcut trousers, and a pair of slip on mule shoes. I had short blonde hair, looked about 12, no idea why they let me into the pub, but they always did 🤷🏼♀️