If you remember, Katie H couldn't resist having a dig at Katie P's husband Kieran Hayler's affair after learning Katie P and Kieran had named their second child Bunny, now two.
Katie H quipped on Twitter at the time: "Bunny? BUNNY?! Makes sense I guess, given your dad was going at it like a rabbit with all of mums mates."
Now, in her upcoming autobiography, Reborn, which is serialised in The Sun, Katie Price, 38, has hit back, saying: "I did read the columnist Katie Hopkins' comment about Bunny. She tweeted that she thought her name was apt seeing as her dad had been "going at it like a rabbit" with all of my mates."
"Actually, I thought she was bang on about Kieran," added Katie Price, "but to say that about a six-week-old baby was simply vile."
Katie P and Kieran's daughter was born in August 2014, just a few months after Katie P discovered Kieran had an affair with her close friend Jane Pountney while she was pregnant.
As well as hitting back at Katie H's remark about Bunny's name, Katie P also pointed out Katie H had broken one of her own rules about naming kids… after calling her own daughter India while also criticising parents who used geographical names as monikers.
If you remember, back in 2013 Katie H revealed on This Morning that she didn't like "geographical locations names" such as "Brooklyn or London."
Phillip Schofield then pointed out Katie H's daughter is named India, to which she replied: "It's not related to a location. India is a very lovely name for a lovely child."
"I wouldn't mind," continued Katie P, "but she named one of her children India. Geography's not my strong point, but that's a whole subcontinent, for God's sake. Hasn't she ever heard of the phrase pot calling the kettle black?"
The two Katies appeared together in Celebrity Big Brother last year.
Fancy winning some GREAT prizes? Check out Reveal Competitions here!