A Tony winner, several Olympians, Super Bowl champions and Bachelorettes are just a few of the stars who have won the coveted mirrorball trophy throughout the show’s 20-year history.

The star with the lowest combined judges’ score and viewer votes was eliminated at the end of the episode.

After the stars performed their routines, which recalled iconic dances from previous seasons, four stars earned perfect scores: "The Secret Lives of Mormon Wives," star Whitney Leavitt; wildlife conservationist Robert Irwin; TV personality Alix Earle; and reality TV star Dylan Efron.

Season 34 of Dancing With the Stars features relay dances, pairing celebrities with former champions, while judges score individual and head-to-head performances, shaping the leaderboard and eliminations.

For the 20th anniversary episode, he danced to the same song his sister dedicated to their late father, Steve Irwin, when she competed on "DWTS."

In Week 9, the competition show honored its two-decade tenure with a 20th birthday party on Nov. 11. Former host Tom Bergeron returned as a guest judge on the episode. Each celebrity and dance pro duo danced to a song previously done as a "freestyle" number in an earlier season.

Dancing With the Stars' winner Xochitl Gomez opened up about dancing with Robert Irwin and being choreographed by Witney Carson

The countdown to the winner of this season’s Len Goodman Mirrorball Trophy continued on week 9 of Dancing with the Stars, hosted by Alfonso Ribeiro and Julianne Hough, when the dance competition celebrated its “20th Birthday Party.” The seven remaining couples took to the ballroom floor with a remix of iconic performances from past seasons.

In 20 years of 'Dancing With the Stars,' here are the 20 best breakout performances across seasons including many with Derek Hough, Mark Ballas & more

During Dancing With the Stars’ 20th anniversary episode Nov. 11, Prince William called in to give Robert Irwin and his dance partner Witney Carson some encouragement.

Royal fans were delighted after they caught a glimpse of the Prince of Wales on the US edition of Dancing With The Stars. Prince William wished the “best of luck” to Earthshot Prize ambassador Robert Irwin prior to the Australian's performance on the popular dance competition series.