That same thing happened to me at my dad's memorial service two years ago. My sister said "really, no one's going to dress, and I'll probably just be wearing jeans". But I hadn't taken anything with me that would have been casual AND presentable, even by my low standards. So it was slacks, tie, and blazer. And yes, I left the blazer in the car.
And as it happened, a couple of other guys did show up in similar or better. So there! Take that, heathens!
