MPHO RANTAO THE stork is making its way to the Legend household for a third time.  R&B singer John Legend and wife, model Chrissy Teigen have announced that they will be welcoming their third child to their growing family.  The revelation was made after Legend released the music video for his new single titled ‘Wild’ which features Gary Clark Jr. on Youtube, as well as posting a snippet of the video on his Instagram page.  The Grammy award-winning singer held a live premiere for the music video along with Teigen and their two children, Luna and Miles.  Prior to the…