John Mayer, 44, is seen hugging goodbye Sabrina star Kiernan Shipka, 22, before leaving Tower Bar

John Mayer, 44, Spotted Hugging & Grabbing Drinks With ‘Mad Men’ Star Kiernan Shipka, 22

John Mayer Stops Los Angeles Concert to Help Distressed Fan

John Mayer Says Bob Saget Was ‘One of My Favorite People in the Galaxy’