On Saturday night, Skylight Clarkson North (best known for being the NYFW hub) was transformed by Jeff Koons into an over-the-top luxury carnival for Natalia Vodianova's Naked Heart Foundation and amfAR’s Fabulous Fund Fair - in New York for the first time! - attracting models and celebrities with special performances by rap superstar Nas and pop sensation Charli XCX.

The fundraiser, which raised nearly $2 million for both charities, featured whimsical attractions including Louis Vuitton Bumper Cars, a Graveyard Rummage by Stella McCartney, Moncler’s Frightening Freezing Game, a Piñata Challenge by Sergio Rossi, Pin The Tail by Balmain, and Chopard’s Diamond Drop. Winners walked away with a range of fabulous gifts from a deck of Givenchy playing cards to a leather Louis Vuitton Masters bag.

Notable guests included Karlie Kloss, Ellie Goulding, Naomi Campbell, Teyana Taylor, Constance Jablonski, Shanina Shaik, Anja Rubik, Izabel Goulart, Sofia Resing, Devon Windsor, Jenna Lyons, Andreja Pejic, Paris and Nicky Hilton, Brooklyn Beckham, Pat McGrath, Helena Bordon and more.

As for best costumes? Karlie Kloss was a convincing Marilyn Monroe, while Paris Hilton was a blonde Princess Jasmine escorting her sister Nicky who flaunted her baby bump in a cheetah bodysuit.

Click through for a look inside the night’s festivities!

[Photos via Getty]