Goldie Hawn and Kurt Russell became grandparents for the seventh time in December following the arrival of their son Wyatt Russell's baby boy.SEE: Goldie Hawn's mini-me granddaughter steals the show in must-see photo The actor and his wife Meredith Hagner kept the birth of their son out of the spotlight for several months, before announcing the happy news in March.While the protective parents are yet to share any photos of their first child, Meredith has posted a hilarious video on Instagram,