One of the best of all the many traditions Wimbledon has is the Champions Ball, held just for the men's and women's winner, on Sunday night. Serena Williams attended in a shimmering gold Burberry dress (although her previous plan was to wear Max Azria), completing the look with strappy black heels. It's without a doubt one of her best red-carpet looks EVER, as she oozes sass and sophistication. Rafael Nadal's look was simple yet elegant, as the Spaniard donned a black tux and black bow tie. The event was held at the InterContinental Park Lane Hotel and both champs were clearly having a wonderful time.