Overview
- The celebration opened with a Derek Hough–choreographed routine featuring six original Season 1 pros and included an in memoriam tribute.
- A first-time relay had celebrities dance with former champions for bonus points; winners were Jordan Chiles with Apolo Anton Ohno, Dylan Efron with Rumer Willis, and Robert Irwin with Xochitl Gomez.
- Whitney Leavitt and Mark Ballas held immunity from the relay and were awarded two bonus points.
- Perfect 40s went to Robert Irwin & Witney Carson, Dylan Efron & Daniella Karagach, Alix Earle & Val Chmerkovskiy, and Whitney Leavitt & Mark Ballas.
- The semifinalists are Robert Irwin & Witney Carson, Whitney Leavitt & Mark Ballas, Alix Earle & Val Chmerkovskiy, Elaine Hendrix & Alan Bersten, Jordan Chiles & Ezra Sosa, and Dylan Efron & Daniella Karagach, with Prince Night on Nov. 18 and the three-hour finale on Nov. 25.