Throughout the evening, Pettifleur also shared a video of Travolta dancing on her Instagram story.
The Saturday Night Fever channelled his most iconic dance moves while swaying his hips on stage.
"Legendary" Pettifleur wrote on the video.
Travolta appears to be enjoying his visit to Australia. Earlier today he shared a photo with his children Ella Bleu, 19, and Benjamin, 8, and an adorable koala at Featherdale Wildlife Park.
"At the @featherdalewildlifepark with the kids," he wrote in the caption.
Last week, the actor posted a video of himself in Sydney Harbour to announce his "Meet n’ Grease" movie sing-a-long. Travolta couldn't resist the opportunity to make a Grease reference.
"Sandy! I thought you were going back to Australia. Here I am in Sydney. I can't find you! I can't keep doing this Sandy!" he said in his best Danny Zuko voice.