Christy Walton net worth: Christy Walton is an American billionaire heiress who has a net worth of $31 billion. As of January 2014, Christy Walton is the richest woman in the world. Christy Walton was the wife of the late John T. Walton who was the son of the late WalMart founder Sam Walton. Christy and John had one child together, a son named Lukas. After the death of her husband John, Walton inherited his fortune of $15.7 billion dollars made up mostly of Walmart stock. Christy Walton also owns a stake in a solar power company First Solar which her late husband founded before his death. Walton currently resides in Jackson, Wyoming but has properties around the world. Walton donated her seven acre San Diego home to Cross Border Philanthropy. In case you have been living under a rock, Wal-Mart is the world's largest retailer with 2 million employees and 7,300 stores, serving 200 million customers. Each year, Christy earns hundreds of millions of dollars in Walmart dividends alone. Without ever lifting a finger. Christy Walton is the richest woman in the world due to inheriting money from her late husband, one of the heirs of the Wal-Mart fortune, and from their investment in First Solar. The second richest woman in the world is Christy's sister in law Alice Walton. Christy is the 10th richest person in the world, overall. The Walton siblings and and Christy control more than $120 billion in wealth and are arguably the most powerful family in the world. Christy is a very active philanthropist who supports dozens of different causes, especially those related to the protection of animals. On the other hand, Christy has received some criticism for refusing to sign the billionaire's giving pledge. This is the pledge put forth by Bill Gates and Warren Buffett whereby people who join are agreeing to donate at least 50% of their personal wealth to charity.