Stranger Things have happened than seeing Millie Bobby Brown in disguise (Picture: GC Images) It’s not always easy being a celebrity. Yes, you might enjoy the adulation — not to mention the perks — that come with being an A-list film star, a TV legend or a chart-topping musician, but there’s a downside to it too. Because while Mr and Mrs General Public can just pop to the gym, the supermarket or out for dinner unbothered, normal life isn’t nearl…