Who are the richest women in the world?

Who are the richest women in the world?
The Richest Women in the World are:

1) Alice Louise Walton- 20.6 billion
2)Liliane Bettencourt - 20 billion
3)Birgit Rausing (and family)- 13 billion
4) Savitri Jindal - 12.2 billion
5)Abigail Johnson - 11.5 billion
6)Susanne Klatten- 11.1 billion
7)Iris Fontbona (and family)- 11 billion
8)Jaqueline Mars - 11 billion
9)Anne Cox Chambers- 10 billion
10) Charlene de Carvalho- Heineken - 7 billion