The couples dance to songs that represent the celebrities' most memorable years in their lives, with several amazing routines.
Tom Bergeron was away visiting family, so Alfonso Ribeiro was there to fill in for him.
Alexa and Mark started off the night with a Foxtrot that earned a score of 21.
Gary and Anna danced a jazz routine to "That'll Be The Day" in honor of the year he starred in The Buffy Holly Story. It earned a score of 16, landing them at the bottom of the leaderboard.
Tamar and Val danced a rumba that earned a score of 27.
Allison Holker announces that she is pregnant!
Hayes and Emma danced a contemporary routine that also earned a score of 27.
Alek and Lindsay's Paso Doble earned a score of 24.
Nick and Sharna's Jazz routine to "Backstreet's Back" earned a score of 27.
Carlos and Witney's Waltz earned a score of 25.
Paula and Louise danced a Cha Cha that earned a score of 18.
Andy and Allison's Cha Cha earned a score of 23.
Bindi and Derek danced a Contemporary routine that earned a score of 28, placing them at the top of the leaderboard.
One couple was eliminated at the end of the night. Gary and Anna were sent home.