Demi Moore declared Cher her “personal hair inspiration” at the amfAR Gala. The ‘Ghost’ star, 61, was the host of the HIV and AIDS charity’s bash at Cannes Film Festival, and she gave a special introduction to the 78-year-old music and screen legend and shared how she inspired her to have raven-black hair. She told the crowd: “This incredible woman that I’m about to introduce, she’s a Grammy winner, an Oscar winner, an Emmy winner…” When someone seemingly interrupted her, she clapped back: “Are you an Emmy winner over there in the back of the room? I f****** don’t think so!” Before she gushe…