I have an evening function to go to this weekend. It will be mixed ages, at somebody's house, partially inside and partially outdoors. I am expecting the men to be wearing everythng from sportcoats to polo shirts and khakis. My question is, would it be okay for me to break out the seersucker suit for a casual function that happens to be in the evening? (sans tie, with a buttondown shirt, ribbon belt, loafers, no socks) Thoughts anyone?