Justin Bieber, the somewhat troubled teen star, is not the first person you'd probaby think of to look after your kids. But it sounds like the onetime wild child may have turned over a new leaf, after Kris Jenner dubbed him "the best babysitter in the world".
Biebs and Kourtney Kardashian's son Mason Disick were captured in a cute photo the Kardashian matriarch shared to Instagram, captioned: "Mason and Justin Bieber family pool day!!! #bestbabysitterintheworld."
Bieber also shared the photo to his profile, saying "Mason is cool as a fan".
It's certainly not the first time Bieber and the Kardashian Klan have hung out - they have grown close over the years. He was recently snapped alongside Kendall Jenner for American Vogue, in a shoot dubbed "The Brat Pack". And Kris has been romantically linked to Justin's road manager, Corey Gamble.
Bieber was out and about doing other good deeds over the weekend - he popped up on stage to surprise fans at an Ariana Grande concert to perfom his track All That Matters - although he forgot the words, and joked about it afterwards, tweeting: "Had fun with u Ariana, even tho I forgot all the words haha."
Whatever happened on stage, keep being nice Biebs, we like this side of you.