Gregg Donovan, left, former ambassador of Beverly Hills and a Spiderman character impersonator, honor actor Olivia Newton-John with flowers on her Hollywood Walk of Fame star in Los Angeles Monday, Aug. 8, 2022. Olivia Newton-John, the Grammy-winning superstar who reigned on pop, country, adult contemporary and dance charts with such hits as “Physical” and “You’re the One That I Want” has died. She was 73.