Kirsten Rausing

The Rausing siblings hold a third of Tetra Laval, a worldwide food packaging, processing, and distribution corporation, with a fortune of £12 billion. They are descended from Ruben Rausing, a Swedish industrialist who founded the firm in 1951. Kirsten Rausing, along with her brothers Finn and Jörn, owns a third of the packaging company TetraLaval and is on the board of directors. Kirsten's grandfather created Tetra Pak, a company that pioneered aseptic packaging.

The new packaging allowed products such as milk and orange juice to be stored in cartons rather than glass bottles. In 1995, Kirsten's late father, Gad, purchased Kirsten's uncle Hans for an estimated $7 billion. International Flavors & Fragrances is also owned by Kirsten's two siblings, Finn and Jörn.

Net worth: $9.4 Billion