While it looked like Kendall Jenner was going to be the one to have a nip slip at her own birthday party in her extremely low cut top, it was actually her big sister Kourtney Kardashian who had the wardrobe malfunction.
The 36-year-old mom of three stunned in an all black ensemble, including a black satin jacket, a low-cut lace corset, high-waisted leather leggings and black heels, according to E! News. While the outfit looked completely put together while standing still, when she was walking, her jacket fell to the side and revealed that she definitely wasn't wearing a bra underneath the see through lace top.
Besides the slip, the Kardashian-Jenner sisters all looked flawless as they celebrated Kendall's 20th birthday. Kendall wore an extremely revealing black Sergio Hudson jumpsuit with her hair tied in a messy bun on top of her head while Khloe and Kim also kept to the all black memo in a tight jumpsuit and tight maternity dress, according to People. Kylie, on the other hand, really stood out in an orange draped jumpsuit and bangs.
The sisters took to social media to share several black and white photos from the photo booth, which has become a staple party activity at all of their family events. Also in attendance was Kim's husband Kanye West, mom Kris Jenner and her boyfriend Corey Gamble, Kendall's model BFF Gigi Hadid, Jordyn Woods, Ian Connor, Justin Bieber, Tyler The Creator, Simon Huck and many more of the family's closest friends.
