Glossy Grudge: Meghan Markle's Last Minute Cosmetic Request Left Kate Middleton 'Grimacing' Amid a 'Clash' of Royal Styles

Kate, the then-Duchess of Cambridge's sneer at Meghan Markle at the 2018 Royal Foundation Summit, continues to fascinate both royal and Sussex fans six years later thanks to Prince Harry's book Spare.

The summit was a chance for the four millennial royals, which also included Prince William, to lay out the causes for the initiatives they wished to champion in the coming years. The filmed discussion took place three months before Harry and Meghan's wedding.

The forum led to the quartet of thirtysomethings being labeled the "Fab Four" by the British press, which was to be short-lived. According to the Duke of Sussex's memoir, Kate and Meghan started having issues at that event, and it happened backstage.

"All this came on the heels of an awkward moment backstage. Meg asked to borrow Kate's lip gloss. An American thing. Meg forgot hers, worried she needed some, and turned to Kate for help," the prince wrote.

Describing the animosity that festered between the Duchess and Duchess-to-be, Harry added, "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. And then the press sensed something was up and tried to turn it into something bigger. Here we go, I thought sorrowfully."

The icy exchange continues to divide opinion in online communities. "I only ever share lip gloss with my absolute best friend of over 30 years. [The] cheek of her!" a TikToker wrote.

Another user added, "You can’t convince me that MeGain didn’t write parts of this book — lip gloss, ill-fitting dresses? Men don’t give a c--- about that stuff."

Some commenters were disgusted by the notion of sharing beauty or hygiene products. "Who the f--- asks someone to borrow their lip-gloss? No, it’s not an American thing; it’s Meghan’s thing. Gross!!" someone wrote.

This incident would be soon followed by the Princess Charlotte bridesmaid dress fiasco that left Meghan furious at Kate, which happened days before the future California residents married.

During the interview, the Duchess of Sussex reportedly got frustrated when the microphone was passed from William to Harry and then to Kate — seemingly avoiding her "at all costs."

While Kate talked about their shared passions, Meghan used the platform as an opportunity to discuss her feminism. "Harry with knife crime, William with homelessness, and for me with sort of addiction and things, I think just sort of coming together to try to find some sort of common ground and to be able to draw ideas together and find a way forward," Kate shared after being asked about their familial and professional dynamic.

Daily Mirror reported on the lip gloss controversy.