The Smith family — Will, wife Jada Pinkett-Smith, and kids Jaden and Willow — was actually watching Lady Gaga perform and seemed to be enjoying the show. What looked like an open-mouthed gape from daughter Willow was actually because she was chewing gum. Pinkett-Smith seemed to be scratching her nose, not covering her mouth in disbelief.Image source: MTV
You can see it for yourself at about the 3:04:17 mark on MTV’s full webstream of the show. Later, starting at the 3:17:30 mark, the Smith family seems to be enjoying and applauding Cyrus’ performance.