1. CHRISTY WALTON, 57, & FAMILY
Net worth: $25.3 billion
Source: Wal-Mart, U.S.
2. LILIANE BETTENCOURT,89
Net worth: $24 billion
Source: L’Oreal, France
3. ALICE WALTON, 62
Net worth: $23.3 billion
Source: Walmart, U.S.
4. GEORGINA RINEHART, 58
Net worth: $18 billion
Source: Mining, Australia
5. IRIS FONTBONA, 69, & FAMILY
Net worth: $17.8 billion
Source: Mining, Chile
6. BIRGIT RAUSING, 88, & FAMILY
Net worth: $14 billion
Source: Packaging, Sweden
7. JACQUELINE MARS, 72
Net worth: $13.8 billion
Source: Candy, pet food, U.S.
8. SUSANNE KLATTEN, 49
Net worth: $13 billion – As of March 2012
Source: BMW, pharmaceuticals, Germany
9. ANNE COX CHAMBERS, 92
Net worth: $12.5 billion
Source: Cox Enterprises, U.S.
10. SAVITRI JINDAL, 62
Net worth: $10.9 billion
Source: Steel, India
11. ABIGAIL JOHNSON, 50
Net worth: $10.3 billion
Source: Fidelity, U.S.
12. JOHANNA QUANDT, 85
Net worth: $10 billion
Source: BMW, Germany
13. LAURENE POWELL JOBS & FAMILY
Net worth: $9 billion
Source: Apple, Disney
14. CHARLENE DE CARVALHO-HEINEKEN, 57
Net worth: $7.7 billion
Source: Heineken, Netherlands
15. MIUCCIA PRADA, 62
Net worth: $6.8 billion
Source: Prada
16. ANTONIA JOHNSON, 68
Net worth: $6.5 billion
Source: Diversified, Sweden
17. BLAIR PARRY-OKEDEN, 61
Net worth: $6.3 billion
Source: Cox Enterprises, U.S.
18. WU YAJUN, 48, & FAMILY
Net worth: $5.7 billion
Source: Real Estate, China
19. YANG HUIYAN, 30
Net worth: $4.7 billion
Source: Real Estate
20. ROSALIA MERA, 68
Net worth: $4.5 billion
Source: Zara
