There was a time when Katie Price and Emily Macdonagh were pretty civil with each other, even heading to one of Peter Andre 's concerts like they were old pals.
Katie, 40, even joked back in 2016 that she wanted to make a 'pregnancy pact' with Pete's new wife so they could both become new mums at the same time.
But over the years as a frost settled over Katie and Peter's relationship over how they want to raise their two kids, Junior, 13, and Princess, 11, a chill also settled over her friendship with Emily.
Most recently Emily, who married Pete in 2015, appeared to reignite their feud by taking a swipe at the mum-of-five for her mucky mansion implying that you would never see anything of the sort at her home.
Katie Price lashes out at claim she's desperate for 'Sam Faiers surgery'
And Katie sniped back in an interview that she felt Pete and Emily's parenting habits were "too strict".
The former glamour model hasn't made things easy for herself either when she misunderstood a comment made by Emily about Katie's drinking habits.
Booze spat
Katie lashed out at Emily in a furious online rant after believing that Emily had made a sly dig about her in an interview.
The former glamour model had seemingly thought that doctor Emily was addressing Katie's boozing during a chat with OK! magazine , and she wasn't happy.
In a post she's since deleted, Katie said on Twitter : "Emily bind your beak , don't judge me , watch my show at 10pm tonight on @QuestRedtv then see if you digs about me #donthatemecauseyouaintme"
The tweet is the first time Katie has publicly slammed Emily.
Doctor Emily had said during her chat with the mag that didn't mention Katie: "Neither of us drinks alcohol; I think drinking can sometimes cause rows."
Furious Katie Price accuses Peter Andre of 'trying hard to bring me down'
Cosmetic surgery jibe
Emily has also aimed other backhanded digs at her husband's ex, when she slammed surgery enthusiasts.
Something which Katie is very well known for having undergone multiple boob jobs, liposuction, and facelifts.
In an OK! column earlier last year Emily wrote about the 'worrying trend' for going under the knife: "I think people often forget there are risks with any procedure you undergo, whether it’s an infection or a reaction to the drugs.
"The only time I agree with cosmetic surgery is if someone has one particular feature that is really affecting their self esteem.
"If they consider all the risks and benefits and still decide to do it, then I understand that."
Katie Price says 'slob' Kris Boyson to blame for mucky mansion
Katie's TV career with Peter
It appears tensions first rose between Peter's wife and ex-wife when, Katie suggested that she and Pete should present the I'm A Celebrity spin-off together.
As Laura Whitmore stood down in April 2016, despite being divorced for seven years from her fellow I'm A Celeb contestant Kate tweeted: "I would sooo present this how cool if me and Pete did it."
At the time according to Planet Radio the comment didn't go down well with Emily as an insider said: "Emily has spent a lot of time home alone, as Pete’s recent music tour took him away. So the thought of him taking off to Oz with Katie just takes the biscuit.
"Emily is having none of it and wants Pete to put Katie back in her place. She’s no walkover and will tell Katie to back off if Pete doesn't."
Peter Andre's wife Emily takes ANOTHER pop at Katie Price with savage cleaning swipe
Snubbed messages
As the duo's friendship seemed to sour, Katie and Peter's relationship became even more strained over the following years.
In April 2018, Katie revealed that Pete would only communicate with her in a group text with Emily present.
Katie told OK! Magazine at the time that she barely saw Pete: "Apparently he won’t text me without Emily being on it.
And Katie wasn't happy when Emily fell pregnant and she apparently ignored her offers of going maternity shopping together.
Emily Andre stokes Katie Price feud with shock revelation about children's futures
Co-parenting styles
The pair have been caught up in a series of bitter rows over their co-parenting, most recently with Katie blasting Pete over his refusal to allow her to film their two children as part of her Quest Red reality show My Crazy Life.
Katie hit out at Pete calling him a "b****nd" at the launch for her kids fashion show, and complained in a Closer magazine interview that he and Emily had stricter parenting techniques compared to her.
"I think Princess's dad's side eat very different to my side, completely different. They're very strict, whereas I am very laid back."
She added that she wanted to encourage her kids to find out what they like and don't like without being fussy, saying that there were major "un-positives" to divorced parenting.
Katie Price hints Peter Andre tells kids they'll get fat without 'strict' diet
Domestic goddess
Their different parenting styles has caused no end of stress on both sides, with Emily aiming a savage dig at Katie in her OK! column about cleanliness.
Katie has come under fire of late over her mucky mansion and for feeding her five kids low-calorie junk food.
And Emily has now insisted she'd never dream of doing anything of the sort, detailing her love of home baking, cleaning and healthy living.
While Katie - who co-parents Junior and Princess with Peter - allowed her kids to tuck into pancakes and a weight-loss syrup followed by pizza on Sunday, chez Andre, Emily says it's all Disney films and homemade goodness.
Katie Price slams claims she's getting MORE plastic surgery to lure back Peter Andre
Katie Price blames cheat Kieran Hayler and fat-shaming Kris Boyson for confidence crisis
"It's been a busy time with the kids being off school for Easter. I've done lots of baking with them and we've made chocolate cupcakes, bread and soup - I've felt like a domestic goddess!" she wrote in her column for OK! magazine .
Revealing how Pete praised her for holding down the fort while he tries to get his film career off the ground in Los Angeles, she also not-so-subtly implied that cleaning, as opposed to diet food, is the best way to lose weight.
"I love cleaning... I've always been very clearn... I can definitely see how it can have a positive impact on your mental health. It also keeps you active and you burn a lot of calories," she wrote.
