Originally appeared on E! Online It's Jack Blues Bieber's world, we're just living in it. Justin ...

Justin Bieber and Hailey Bieber posted new photos of their 8-month-old son Jack Blues Bieber on Easter Sunday.

And just like that, you have an 8-month-old baby on your hands. This month, your little bundle of joy will be reaching all sorts of exciting baby development milestones, from crawling to talking ...