Reality TV star Kim Kardashian bought bottom workout machines for her sisters and her mother. The "Keeping Up with the Kardashians" star purchased the machines for her family -- including her siblings, Kourtney, Khloe, Kendall and Kylie and her mother Kris Jenner -- which promise to "deliver fast, convenient, b*** -blasting results", reports femalefirst.co.uk.

Taking to her Instagram stories, Kim said: "I got my sisters and my mom a Christmas present but I got myself one too. I'm working out right now and I'm gonna open this and show you guys what I got them. I hope my sisters and mom will like this!" Kim also showed her personal trainer Melissa Alcantara giving it a go.