Ever opened a wedding invite and wondered, "What exactly is Black Tie Optional?" We're breaking it down so you can show up with confidence Black Tie is the most formal dress code Black Ruffle Vneck Mini Dress XL CIDER Women's Summer Cocktail Dress Tube Ruched Ruffle Mini Dress: Black, XXS at Amazon Women's Clothing store Which dress for formal black tie optional? Dress code: formal, black tie optional Wedding is late afternoon early evening ceremony at a garden (assuming it'll be an inside reception based on venue) Crowd is