I think if you wear a Polo it's required that it has the little IZOD alligator on it...and...it's definitely required that your penny loafers have brand new, shiny pennies in them!
Our son used to wear straight legged Calvin Klien jeans with the layered IZOD polos (collar up of course) and penny loafers or Boat (deck) shoes. I remember wearing baby doll socks (the lacey ones) with high heeled sandals...stretch pants that were 3/4 length and the big T-shirts over them...Ked's white tennis shoes or slip on flats went with them...oh, and lots of hairspray for the big hair and scrunchies for the big pony tails! And...no matter what anyone says...there
was some darned good music that came out of the 80's!
Have fun at your BBQ!