It's no secret that there is no love lost between Kate Middleton and Meghan Markle. The two women initially seemed to get on well, but following the Sussexes' decision to step down as senior royals - and hit out at the royal family - the divide now seems insurmountable.
In his tell-all memoir Spare, Prince Harry documents a number of interactions between his wife and sister-in-law. And it seems the differences between the pair were clear from the very start.
In one instance, Harry recalls a telling moment that he believes left a mark on Meghan and Kate's relationship - and it's surprisingly innocuous.
He writes: "Meg asked to borrow Kate's lip gloss. An American thing. Meg forgot hers, worried she needed some, and turned to Kate for help.
"Kate, taken aback, went into her handbag and reluctantly pulled out a small tube. Meg squeezed some onto her finger and applied it to her lips. Kate grimaced. Small clash of styles, maybe? Something we should've been able to laugh about soon after. But it left a little mark."
'I'm spending £20k on a new bathroom - but won't help my brother out with cash'Elsewhere in Spare, Harry tries to set the story straight on a much-reported fallout over bridesmaid dresses between Meghan and Kate before Meghan and Harry's wedding.
It was initially reported that a disagreement between the bride and her future sister-in-law ended with Kate in tears. But during Meghan and Harry's interview with Oprah Winfrey in 2021, Meghan claimed that, in fact, she was the one who cried.
According to Harry, tensions began when the two women were discussing wedding day rehearsals, and Kate forgot some small aspect of the nuptial plans. Meghan suggested that the detail slipped Kate's mind because she had "baby brain" - Kate had given birth to Prince Louis on 23 Aprill, 2018, just 28 days before Harry and Meghan got married.
Then, four days before the wedding, Princess Charlotte tried on her bridesmaid dress and found it was too big. Harry claims that Kate asked that the dress be completely remade, while Meghan countered that her tailor could make alterations.
Harry writes that after the argument over the dress between Meghan and Kate, he returned home to find Meghan on the floor sobbing. He adds that Kate visited the next day with flowers and a card to apologise, something Meghan herself also described in the Oprah interview.
The two couples reportedly met for a reconciliation tea at Kensington Palace after Meghan and Harry's honeymoon. Harry claims it was then that Kate confronted Meghan about the "baby brain" comment, saying, "You talked about my hormones. We are not close enough for you to talk about my hormones."
According to Harry, Meghan was confused by Kate's comments and insisted that that was just the way she spoke to her friends. William then allegedly pointed at Meghan, called her "rude" and said this wasn't the way people in Britain behaved. Meghan, in turn, aparrently told William to "take your finger out of my face".
Harry concludes in his book, "Had it really come to this? Shouting at each other about place cards and hormones?"