"<div class=""caption-credit""> Photo by: AFP</div><div class=""caption-title"">Liliane Bettencourt</div>Liliane Bettencourt <br> <br> Net worth: $30 billion <br> Country: France <br> Source of wealth: L'Oreal <br> At age 90, Liliane Bettencourt is the world's richest woman, and enters the top ten list of the world's wealthiest people for the first time since 1999. She and her family own over 30% of L'Oreal, which her father founded. <br>"