Elton John and Mariah Carey have joined the host of famous faces who have paid tribute to the “beautiful and courageous” Dame Olivia Newton-John, following her death aged 73. The British-born singer died “peacefully” at her ranch in southern California on Monday morning, surrounded by family and friends, her widower confirmed. After the news broke, famous names from the worlds of television, film and music took to social media to share memories and send condolences to her family.