Christina Aguilera is spending quality time with her family amid the release of Disney's live-action remake of Mulan. The 39-year-old pop star cozied up with her two kids -- Max, 12, and Summer, 6 -- on Friday (Sept. 4) to watch the premiere of the new Mulan on Disney+. The singer shared the experience with her fans by live-tweeting throughout the viewing. "My kids know about #Mulan, but they haven’t seen the live action version ...