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.) The photos are the perfect way to jumpstart what will surely be a memorable night for old and new Dancing With the Stars fans. Joey Graziadei and More 'DWTS' Champs Will Return for 20th Birthday Party For starters, the final seven celebrities of the season will dance for America's vote in front of guest judge Tom Bergeron. In addition, six original pros from season 1 - including Alec Mazo, Ashly DelGrosso, Louis van Amstel, Jonathan Roberts, Charlotte Jorgensen and Edyta Śliwińska - will return to the ballroom to perform a special number. To top it all off, the show will honor beloved Dancing With the Stars performers we've lost over the years with a moving performance to "Always Remember Us This Way" by Lady Gaga, choreographed and performed by Ezra Sosa and Rylee Arnold. Dancing With the Stars airs on ABC and Disney+ Tuesdays at 8 p.m. ET. Prove your DWTS fandom with Us Weekly and Bracketology.tv! Compete against other fans and Us editors in the Bracketology DWTS fantasy league this season to predict which pairs will make it to the finale for season 34. Get access to exclusive content, stats and a chance to win prizes. Join the league for free today!