Expo uniforms?

PLEASE if your store has someone that is designated, schedule as expo, even if it’s only one day, PLEASE tell me what they wear?? I have been expo/ makeup for about 2 years and I have always wore an outback tee shirt or a short sleeve dress outback shirt. Now I’m told I have to sit in the window in a black long sleeve? We’re on the beach mind you, with no AC. I don’t leave the kitchen… am I just getting tortured by my boss or is this a collective outback thing bc i honestly feel it makes no sense if that’s my only job, to dress like a server.