In the book, James explains that he and Alizee had been to a wedding close to the Middleton family home in Berkshire and made the split decision to head back there after the event and stay the night. But unbeknown to him, William, Kate and their children were also staying there overnight and he only realised the next morning after hearing the children giggling. He describes how he left Alizee sleeping in bed while he went downstairs to see the family and to make his girlfriend a cup of tea.

And he reveals: “I’m about to take a cup up to Alizee when she appears at the kitchen door. She has just got out of bed, her hair still tousled, and she is wearing one of my shirts. In situations like this, Alizee is ­wonderfully French.

“She does not panic or rush upstairs to get dressed. Instead, she just greets everyone warmly as if it’s not remotely unusual to be meeting her boyfriend’s sister and brother-in-law for the first time wearing only an oversized man’s shirt.”

James then describes how there’s no awkwardness at all and how he and Alizee then spent the day with his parents, sister, brother-in-law and nieces and nephews and adds he got a “special squeeze” from his sister, who whispered in his ear: “She’s just great.”

It comes after Harry even recalled Meghan and Kate’s first meeting in his bombshell memoir, Spare, describing a major difference between the pair. In Spare, Harry notes how Meghan cooked and that everything seemed to be going well as they chatted about Wimbledon and the legal drama Suits.

However, there was one big difference between the women – and Harry said it was all down to what they were wearing. He writes: “The only possibly discordant note I could think of was the marked difference in how the two women dressed, which both of them seemed to notice. “Meg: ripped jeans, barefoot. Kate: done up to the nines. No big deal, I thought.”