Gwen Stefani's son, Apollo, and husband, Blake Shelton, show up in support of the singer's Coachella performance with No Doubt during weekend two of the music festival. Apollo showed his mom some love before the show, helping her with the soundcheck, and running over to give her a big hug post-show! Blakes appearance comes after the country star told ET last week he missed out on weekend one but made plans to be there for the band's second performance.