Kate Moss + Cocaine = Sex Scandal

"Have you ever had sex with a woman?" said the supermodel -- gazing at Davinia as she slipped out of her party dress. "Well, why don't we do it right now?"

So the three pals stripped and began a lesbian three-in-a-bed sex session in a suite in London's Claridges.

And the trigger for it was, as it would always be, Kate's cocaine and booze addiction.

Fashion PA Rebecca White, who has known the catwalk beauty since 1998, revealed: "Kate is naturally a very sexually open person. But, when she's doing cocaine, she becomes even more so and will fall into bed with whoever she chooses. Women as well as men."

After that night at Claridges three years ago, Kate bedded her pals together at least one more time, then slept with them separately. By that time she had also indulged in threesomes with Sadie and her then Hollywood star husband Jude Law.