Kate, 50, wowed in a white satin pencil skirt and matching blazer for the wild night out, finishing her look with fishnets and platform heels. She was arm in arm with photographer friend Mert Alas as she arrived at the party, which went on all night as guests were seen coming and going until 3:30am.
Sienna Miller stopped by with her boyfriend Oli Green, looking boho chic in carrot leg jeans and an embroidered red suede jacket.
The couple welcomed their baby girl five months ago.
Noel Gallagher was also pictured leaving the house party with his daughter Anais, while Damien Lewis made a solo appearance, looking suave in skinny jeans and a white jacket.
Mary McCartney, Laura Bailey, Dave Gardner and his Victoria’s Secret model girlfriend Jessica Clarke also enjoyed the fun bash hosted by the makeup mogul.