But despite the low rating Cassandra still maintained hat she felt 'beautiful, confident and happy' with her performance.
Viewers also commented on how amazing the former wife of Karl Stefanovic 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.