Megyn Kelly criticised Ariana Grande's appearance and violent new 'Petal' music video during the Thursday, August 6, broadcast of The Megyn Kelly Show, suggesting the singer looked 'skeletal' while questioning reports about her wellbeing. The news came after Grande's representative confirmed on August 2 that the singer planned to 'take a step back from visibility' after completing her Eternal Sunshine tour. Her representative said the decision f…