Two decades of Dancing With the Stars calls for one fabulous party. As excitement continues to build for the show's 20th Birthday Party Night - airing on ABC on Tuesday, November 11 - Us Weekly has obtained exclusive new images of the season 34 cast celebrating the show's monumental anniversary. In honor of the milestone, past and present contestants are starting the party early by posing with their professional Dancing partners. (And yes, plenty of confetti is included.