The 39-year-old former glamour model was mocked by Piers during her appearance on 'Good Morning Britain' earlier today (10.07.17), with the outspoken host ridiculing Katie's efforts to revive her career as a singer.
In a clip of her new TV programme 'My Crazy Life', Katie's kids were seen supporting her decision to relaunch her music career, prompting Piers to quip: ''Are you not getting the message that maybe the pop career should be put on hold?''
But Katie - whose new single is called 'I Got U' - quickly hit back: ''Do you know what? I don't care! I'm doing it because I want to do it.
''I actually think it's not a bad song. I don't care if people buy it or not, it's not a money thing. I've always wanted to sing, so why not?''
Then, Piers decided to put Katie on the spot and asked her to perform a song for the TV viewers.
However, the busty star wasn't keen on the idea, saying: ''I haven't warmed up, I can't do the high notes. I haven't even had a cup of tea!''
But after Katie sang a line, Piers joked: ''You wobbled a bit at the end but the early part was good.''
At that stage, Katie decided to turn the focus on the TV presenter, saying: ''You try then! What talent have you got?''
And without any hesitation, Piers cleared his throat and broke out into song, to the annoyance of his co-host Susanna Reid, who put her hands on her head.
Katie responded to Piers' singing by saying: ''I think that's all we have time for, we're coming up to a break!''
Then, Piers suggested: ''I think we should do a duet, Pricey and Piers!''
But Katie wasn't interested in the idea, telling the divisive TV host: ''Nah, you're too old Piers!''
Sometimes actors are not acting.
We pay tribute to the Queen of Soul, Aretha Franklin, who passed away this week at the age of 76.
'Stage Fright' was released on August 17th, 1970.
We can't wait until the Fall for this gritty historic thriller.
From Robbie Williams to Olly Murs, these musicians are still football mad.
It's a far cry from The Beatles' 'I Wanna Hold Your Hand', but Paul McCartney has unveiled a risque new single entitled 'Fuh You'.
Which of Madonna's many hits do you think is the best?