‘Um yep I was slammed by this judge DM, as were about half the other contestants)’ Thorburn’s Instagram post said.
She continued: 'I also found myself truly in the moment with one person despite an audience. That was the most incredible feeling! I also conquered my nerves, got the steps right and entertained an audience'
She concluded: 'I hope I get the chance to continue to learn this truly empowering art.'
Viewers commented on how amazing the former journalist looked.
'Cass Thorburn... classy lady despite the crappy last year or two,' tweeted one.
'Lady in red!!!! Go Cass!!! beautiful beautiful beautiful,' another wrote.
After the performance the 47 year old took to Instagram to share her experience and ask fans to vote for her.
'What a night... I felt glamorous and thought my hard work had paid off... but a one... I'm determined to prove to that judge I can do this,' she said.