Kim Kardashian Shares Singing Sisters Video
US reality TV queen takes sneaky footage of Khloe Kardashian and Kylie Jenner murdering Justin Timberlake track...
Many of us enjoy a cheeky singalong while out in the car, but the results are not normally broadcast to the world via social media.
The pair were happily singing along to JT's Mirrors - not sounding as though they are hitting many of the correct notes, but having fun.
Kim begins the video by smiling at her smartphone and making the "shush" sign with her finger.
And later encourages her little sis, saying: "Sing it Kyles."