Week 10: The Grand Final began with each couple completing an unlearned dance from throughout the series. Tamara and Carmello received another perfect score for their Rumba, putting them in first place after round one, with Alex and Arsen in third place with 23/30 for their Aussie Smooth. The Australian cast of the musical Hairspray then performed a medley of songs from their upcoming tour. All three finale couples participated in a Cha-Cha-Cha Face Off, which was learned 24 hours prior to the Grand Final night. Tamara and Carmello received 27/30, Rob and Alana received 23/30, while Alex and Arsen received 22/30. All eight previously eliminated couples, including David Wirrpanda, returned to the dance floor to perform their favourite dances of the season. Alex and Arsen were eliminated in third place but still performed their freestyle dance. Tamara and Carmello performed their freestyle which they learned only two days prior to the finale, earning 27/30. Rob and Alana received a 30/30 for their final freestyle dance. At the end of the night, Tamara and Carmello led the scoreboard with 84/90 for their three dances, while Rob and Alana earned 75/90
