Janet Jackson just turned 53, but she celebrated only yesterday. The singer/songwriter had a surprise birthday party thrown for her in Las Vegas, the town where her new show “Janet Jackson: Metamorphosis” is located. Celebrity appearances included Questlove, Doug E. Fresh, Ciara, Teyana Taylor, and more! The former Jackson 5 member was completely surprised as seen in the video, and the party even sparked a dance match between Teyana and Ciara.