Your rehearsal dinner dress should feel fun, movable, maybe even a little bit sexy. It's still a special day, but it's not the special day just yet — so loosen up and wear what you like. Go for a silhouette that speaks to your signature style, but feels different than your wedding dress. You may be channeling a princess when you walk down the aisle in a ball gown, but that doesn't mean you can't make a statement in a slip the night before. Read on for 20 looks that fit the bill. They may not all be white, but there's no doubt that when you're wearing one of these, everyone will know you're the bride.