The Keeping Up With The Kardashians star was joined by friends including Cara Delevingne and Tyga and family members such as Khloe Kardashian, Kylie Jenner, Kim Kardashian, Kanye Westand even her mother Kris Jenner.
Despite the fact that her relatives were in the building, somebody clearly thought it was appropriate to hire a stripper to perform a strip tease for Kendall who looked pretty embarrassed in footage which has emerged, showing her squealing while bent over and getting spanked with a whip as her guests watched on clearly entertained.
Aside from the stripper antics, it was an eventful night for Kendall and her crew who were all seen in a polaroid montage from the night pulling silly faces and puckering up to each other - even Kanye seemed happy enough to pose for photos.
Among the guests was French Montana who is reported to have reconciled with Kendall's older sister Khloe after a couple of months apart while rapper Tyga's presence will no doubt fuel rumours further that he and Kylie, 17, are an item.
On a tamer affair, Kendall was treated to a birthday meal earlier in the day by Khloe, 30, Kourtney, who is pregnant with her third child, and mum Kris, although her sister Kylie chose to get her hair done at a salon instead.
There was speculation that Kim had been snubbed from the birthday party in the evening after Khloe told People: "We're going to go to a family lunch, and then later tonight Kendall's having like 15 people over for a little girls' party. I don't know if it's even a party, but a girls' gathering. I asked Kim, 'Oh, are you going tonight?' and she was like, 'I didn't know Kendall was doing anything! I don't know if she was late to be invited, but I'm invited, so I feel good about that!"
