Olivia Newton-John – 73, ‘Grease’ – $60 Million

Olivia Newton-John, who starred in the iconic musical film ‘Grease’ alongside John Travolta in 1978, also has several chart-topping albums under her belt. Apart from being one of the most successful music artists of all time, she has also captured the hearts of fans around the world for her advocacy regarding the environment and animal rights.

Looking at her glowing skin and bright, sparkling eyes, we wouldn’t have guessed that the actress is now in her seventies. She has developed and launched her own skincare line called ‘Retreatment Botanics,’ whose products she credits for her youthful skin. Not only does her brand do wonders for the face, but it’s also environmentally friendly!