The Biebs was snapped watching NBA star, Chris Paul's, 3-year-old son Chris Paul II.
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The cute, little boy was seen sitting on Justin's lap while the two watched his dad and his team defeat the Boston Celtics 106-77.
The babysitting gig probably comes easy to JB. he's made it obvious he's a pretty big fan of kids!
He's always Instagramming pictures of his little brother and sister. Not to mention, he's always donating and doing things to help children all around the world.
We're pretty sure that kid will never find a cooler (AND more attrractive!) babysitter...ever.
So, do you think they made the right choice in letting Bieber watch their kid?! Would you want Justin to be your babysitter? LOL!
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Gallery | Stars And Their Kids!