12. DORIS FISHER

$2.4 billion

SOURCE: Gap

AGE: 90 • RESIDENCE: San Francisco

SELF-MADE SCORE: 7

The Gap cofounder listed the Bay Area estate she shared with her husband, Don (d. 2009), for three decades for $100 million in 2021. The couple borrowed $63,000 to open the first Gap store in 1969. Fisher remains an honorary lifetime director of the $16.7 billion (fiscal year 2021 revenue) apparel company, whose brands include Old Navy, Athleta and Banana Republic.