Even if you’re not going all out for Summerween, there are a handful of spooky movies worth adding to your queue. On top of the entertainment factor, many classics include serious summer fashion inspiration — and The Witches of Eastwick leads the pack. While we still dream of that overalls outfit worn by Cher, another look that lives in our mind rent-free is Susan Sarandon’s polka-dot one-piece — a style that, surprisingly, is still sitting on A…