But there was one problem - the duo couldn't sing.
In the recently uncovered clip (above), Cass and her pal passionately performed a song by Cheryl Cole.
However, the judging panel, which was made up of Australia's Got Talent judge Nicole Scherzinger, Osborne family matriarch, Sharon Osborne, Take That's Gary Barlow and music producer, Louis Walsh, were visibly pained by the performance.
Cassie, who looked very different to how she does in the villa, with platinum blonde hair and a perpetual grin, had the smile wiped from her face when Gary Barlow branded the performance "woeful".
"You really are one in the same person in that you both can't sing," said Take That singer Gary.
"Really awful singing, woeful."
"It's probably just the nerves," Katrina replied, but Gary wasn't convinced.
"No, no it's not the nerves you just really can't sing," he said.
Cassie, who is currently coupled up with Luke Packham on Love Island has tried her hand at reality TV a number of times.