OLIVIA NEWTON-JOHN | 71, $40 MILLION

The music industry wouldn’t be the same without the angelic tunes of Olivia Newton-John. The singer and actress made a name for herself in both facets of show business and music, and she pretty much enjoyed the same level of success in both fields. She’s considered one of the best-selling artists of all-time, and on top of that, she also has four Grammy Awards to boot.

Aside from her triumphant career in show business, Newton-John also had a couple of investments in her portfolio that became her additional source of passive income. She co-founded Koala Blue, which is a chain of women’s clothing boutiques and Gaia Retreat & Spa situated all over Australia. Newton-John has been devoted to environmental and animal rights issues for a long time. She has been a health conscious advocate, involved in various charities, health products and fundraising activities.