Katie posted the bum selfie- or ‘belfie’- a few weeks ago to show off her spray tan, but was reportedly criticised by the TOWIE star.
Ferne allegedly said the former glamour model shouldn’t have shared the ‘belfie’ since she has kids.
Katie wrote in her weekly magazine column: ‘Ferne was thinking of doing a belfie- bum selfie- ‘til she saw mine last week.’
The mum-of-four continued: ‘Apparently I shouldn’t have done it cos I have kids! She didn’t mind getting her bum out in Nuts magazine recently. Hypocrite!’
Check out Katie Price's love life in pictures
Katie also wrote about Jade Jagger expecting a baby at the same time as her daughter Assisi.
The star said: ‘This made me sit back and think how I’d feel if Princess was expecting when I was pregnant, too.’
‘I think it’s great for Jade and Assisi as they’ll be able to support each other and spend even more time together.’
Katie the added: ‘But in an ideal world, I think a mum should embrace becoming a granny as she should’ve done her ‘shift’ in her earlier years.’