Minogue joins her sister, judge Dannii Minogue, in an episode filmed in New York last week.
It’s reportedly the first time the sisters have worked together on Australian TV since a Young Talent Time concert in 1987 (although both appeared at the 2011 ARIA Awards).
“Dannii is so good at this, I’m just along for the ride,” Kylie told news.com.au. “It’s really fun to do something together, so it was a done deal when she asked me.
Kylie performed on The X Factor in 2011 and previously assisted Dannii on The X Factor UK in 2009.