Kate Moss' wild marathon bash really got her into an erotic mood, for the supermodel reportedly got involved in a 'foursome' orgy.
Moss, who turned 34 on Jan 16, got all hot and sweaty with two female models and a male guest while a crowd of onlookers snorted cocaine and ogled the eye-popping performance.
She gasped with pleasure along with the professional female models and guy in her 2,500 pounds-a-night suite on the eighth floor of London's Dorchester hotel.
Moss' boyfriend, The Kills star Jamie Hince was in the other room during the orgy.
A fellow party guest, who witnessed the four-in-a-bed romp, said that the birthday girl was loving the attention she was getting from the three partners she was having sex with.
"Kate was loving the attention from the girls, the bloke and the crowd.
It was standing room only. They were all over each other but it was her night,ï¿½ News of the World quoted the party guest, as saying.