Kim Kardashian, who appears in the short clip, posted the result on her blog yesterday.
Watch the video below:
Kim explained that the video was actually made when the family was shooting their Christmas card last year, joking: "Kourtney was pregnant and trying to hide it!"
She continued: "We didn't have time to finish the whole song, but we thought we would put this out anyway! It was so much fun to make it... it's sort of become a tradition now to make family music videos. Hope you guys enjoy it!"
Kim revealed that Kylie Jenner directed the video, which also features Kourtney Kardashian, Khloe Kardashian, Kris Jenner and Kendall Jenner.
Khloe recently denied reports that she is heading for divorce from her husband Lamar Odom, while Kim has dismissed rumours that she is dating Eva Longoria's ex-boyfriend Eduardo Cruz.