Dancing With The Stars celebrated its own, 20th Birthday Party on Tuesday night (Oct. 11), and Robert Irwin was handing out the gifts.

Party night featured two unique rounds of dance. The first saw couples complete routines set to the songs of freestyle routines from earlier DWTS seasons. Then, each celebrity performed with a former Mirrorball champion in the relay dance round, which pitted two couples, toe-to-toe.

Irwin, the Australian conservationist, and his dance partner Witney Carson completed the first perfect individual score of the season, nabbing 40 out of a possible 40. They did so to the tune of his elder sister, season 20 champ Bindi Irwin’s freestyle song as a tribute to their father, the late Steve “Crocodile Hunter” Irwin.

In an embarrassment of riches, Dylan Efron and Da

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