It is possible to make even the most common outfit look magical. I put on a scarf, a sheer black jacket, my long chain of garnet beads, my crystal necklace, dangly crystal earrings, and some bracelets. Suddenly my outfit went from plain to witchy.
Anything that dangles or sparkles will spruce up an outfit and make it look witchy. If a cat wants to play with it, a witch will look great in it.