Justin and Hailey Bieber's baby boy Jack is growing up! On Saturday, September 6, Justin shared a photo via Instagram of his son, Jack Blues, pulling himself up on the bed his mom was sleeping on. In the sun-filled photo, it appears the family was traveling via private jet. Hailey could be seen wearing a cozy pink sweater while wrapped in a blanket, meanwhile baby Jack looked cozy in a pair of pajamas. Per usual, the child was facing away from the camera, as the new parents have been dedicated to hiding his face from the public.