21. WHITNEY WOLFE HERD
$1.3 billion SOURCE: Dating app AGE: 32 • RESIDENCE: Austin, TX SELF-MADE SCORE: The founder of dating app Bumble became, at age 31, the world’s youngest selfmade female billionaire in February after taking the women-focused app public. She founded Bumble in 2014 with financing from Russian billionaire Andrey Andreev, who launched Europe-based dating site Badoo in 2006. Andreev sold his Bumble stake to Blackstone Group in 2019 after a Forbes investigation revealed a toxic workplace at Badoo (which Andreev denied).