Los Angeles: Kris Jenner has called Justin Bieber the "best babysitter in the world" after the "Baby" singer hit the pool with Kourtney Kardashian's eldest son Mason Disick.
"#Mason & @JustinBieber family pool day!!! "#Bestbabysitterintheworld," she captioned on Instagram.
Wearing a baseball cap and his signature shades, the 21-year-old singer wrote, "Mason is cool as a fan."
Bieber and the Kardashian family have a long history of friendship and there had been romance rumours too between Bieber and Kendall Jenner, though the model had denied them, saying he was just a long time friend of their family.