To Do: Dress for Dinner

San Francisco is notoriously casual. You can wear jeans and a sweatshirt to the fanciest restaurant in town and no one bats an eye. Such a shame, since dressing up can be a blast. I put on a shiny top, pressed slacks, big earrings and extra eyeliner to step out for a meal at Prospect tonight.  Do you prefer to dress up or keep it casual at dinner?