The X Factor judge confirmed press reports linking her to the show on her Twitter page last night.
Addressing her followers, she said: "Filming with Piers tomorrow!"
The new series of Morgan's chatshow has so far seen interviews with Cilla Black and Boris Becker, while this week's episode will feature classical singer Katherine Jenkins.
Minogue's former X Factor colleague Sharon Osbourne attacked her personality on Life Stories earlier this year, comparing the Australian popstar to a "mosquito you just want to flick away".
Piers Morgan's Life Stories airs on Saturday nights on ITV1.