The wife of Wayne Rooney disclosed for the first time in her Disney+ documentary Coleen Rooney: The Real Wagatha Story that the footballer had the male sterilisation procedure after the birth of their fourth son and she used this information to post a false story about herself for Vardy's eyes only.
Rooney, 37, explained: "I thought about what information I was going to put on that story for only Rebekah’s account to see.
Watch: Coleen Rooney: The Real Wagatha Story trailer
"I wanted to do a story I was certain there was no truth in whatsoever and it couldn’t have come from anyone else."
She went on: "After the birth of every single one of my kids the press are always interested in whether I was going to have another baby. The big question always is, ‘Would you like a girl?’
"I always thought I’d have few kids, maybe three at most. And then number four came along. Me and Wayne talked about him having a vasectomy.
"He said, ‘After this baby that’s it, we’re not having any more!’ And Wayne went and got the snip. I knew for sure we wouldn’t have any more.”
Rooney – mother to sons Kai, 13, Klay, 10, Kit, seven, and Cass, five – surprised fans and followers in October 2019 when she publicly accused Vardy's Instagram account of leaking stories about her to The Sun newspaper and became embroiled in the Wagatha Christie scandal and subsequent legal trial.
In the new documentary Rooney explains how she set out to play amateur detective when she believed one of the followers on her private social media account was selling stories about her to the tabloids.
After eliminating all the followers who could see her private posts except for Vardy's Instagram that she chose to share a fake story that she was travelling to Mexico for fertility treatment in the hope of having a daughter.
Vardy did not know Wayne had had a vasectomy and so when the story appeared in the newspapers 'from an insider' Rooney was sure Vardy had leaked it.
The scandal led to the headline-grabbing 'Wagatha Christie trial' in August 2022, when Vardy sued Rooney for defamation and was determined to clear her name.
But High Court Judge Karen Steyn ruled Rooney proved her claim was “substantially true” and that Vardy knew about disclosures to The Sun by her ex-agent Caroline Watt.
The judge ruled that Vardy must pay 90% of Rooney’s legal costs, amounting to a maximum of £1.5m.
Vardy was also left with her own legal bill, as well as those of some of the journalists at The Sun.
Vardy revealed on her Instagram account that she has chosen to jet out of the UK on a family holiday just as Rooney's exclusive documentary aired on Disney+.
Coleen Rooney: The Real Wagatha Story begins on Wednesday 18th October on Disney+ UK.
Read more: Wagatha Christie
Coleen Rooney reveals husband Wayne's reaction to her initial Rebekah Vardy post (Huff Post, 1 min read)
Coleen Rooney almost ended marriage to Wayne over drunken antics with other women (Evening Standard, 5 min read)
Coleen Rooney 'shocked’ by attention that Rebekah Vardy post received (The Independent, 2 min read)