Appropriate clothing to be worn at an afternoon bagel soiree. Minimally formal, but you don't look like a complete schmuck.
“Like imagine you’re going to a bar mitzvah in California and your dry cleaning has all your nice stuff so you grabbed a button down from the closet. Now the service is over and you’re stuffing your face with crudite, chopped liver, tuna salad and lox—that's Bagelware Attire.”