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If you're wearing used dress shoes, give them a quick polish so they shine. You can also rent formal shoes to go with your suit or tux. Select shoes that work with the color of your suit or tux. Shoes are available in brown, black, navy, or white. If you're wearing a colored suit, pick a color that will highlight your suit. For example, if the jacket is maroon, choose black or white shoes. While you don't have to wear cuff links, a little jewelry will add sparkle and sophistication to your look. Choose cuff links made from a material that will match your outfit. For example, if you're wearing a shirt with gold studs, wear sophisticated gold cuff links instead of silver ones. Work with your date to decide on flowers that are suitable for your outfit. For example, you might pick a red rose that matches their outfit. Secure the boutonniere on the left lapel of the jacket so the flower's stem points down.  Your flowers should complement the color of your dress but doesn't have to be the exact same shade. For example, deep red flowers work well with a cream or black outfit. If you're wearing a suit or tux, consider wearing a plain white pocket square to complete your look.

Summary:
Wear polished dress shoes. Pick out cuff links. Wear a boutonniere.