Reality TV star Kylie Jenner, who is share every moment on her Snapchat account, has seemingly put down her half-sisters - Kim, Kourtney and Khloe Kardashian - by calling them "hookers". Kylie posted a throwback photograph of her three sisters on her Snapchat account with the words "Hookers R Us" written on the image. The trio looked glamorous in their black ensembles. Kim was seen wearing a black-and-white strapless dress while Kourtney donned a black skintight dress. As for Khloe, she rocked a long sleeve dress which she teamed with knee-high boots.