There are likely millions of women worldwide who have felt a bit indebted to Sara Blakely since she founded Spanx. That makes her one of the most successful entrepreneurs, but it’s not the end of her contributions. She enters the Worthy 100 because she’s a dedicated philanthropist. She established the Sara Blakely Foundation, which empowers women through education, entrepreneurship, and the arts. 2013, she signed the Giving Pledge, donating half her wealth to charitable causes. And during the COVID-19 pandemic, her foundation launched the Red Backpack Fund, which gives female entrepreneurs $5 million in grants.