Jeff, 33, Marketing Director for Men's Fashion Label

Turn On: "I like when women wear clothes that are canary yellow and red to be sexy. It's color science—people respond to it naturally. That's why stop signs are red and yield signs are yellow. I think denim is always a win. It's classic. Cut-off denim shorts are always cool. And, women like Rihanna and Cassie have interesting, edgy haircuts. It shows off their wild sides."

Turn Off: "Girls who wear leggings on a regular basis. I don't think it's as attractive as it once was. Also, if something doesn't fit well, you shouldn't wear it."