Justin and Hailey Bieber made sure there was one less lonely baby on Halloween. "Happy Halloween from JBB 🎃🎃🎃💜," the Rhode founder, 28, wrote via Instagram on Friday, October 31, sharing a series of photos featuring the pair's young son Jack Blues Bieber dressed as his dad - or, at least, how his dad used to dress during his 2010 My World Tour. Jack Blues could be seen wearing white jeans and a white denim jacket over a purple hoodie - a clear homage to his father's successful tour in which Justin frequently wore the same ensemble.