Just keep it simple by wearing a dress or a skirt with a cute top. You don't need to over-do it with too much bling. Dresses in black usually work. Clubs can be really crowded so be sure to wear something comfortable. Wearing heels in a club is a good option but only if you can handle it. If you think your feet will be painful after all the dancing by the end of the night, wear flats instead. Use a sling bag to avoid the hassle of holding a clutch while dancing the night away.