International Women's Day: Meet the 10 richest women

1. Christy Walton

Seth Perlman/AP/File
In this file photo, the Wal-Mart logo is displayed in Springfield, Ill. Christy Walton, the richest woman in the world, gets most of her money from being a Wal-Mart heiress, but she also owns stock in First Solar.

Net worth: $25.3 billion

Wealth source: Wal-Mart

Overall Forbes rank: #11

Christy Walton is the richest woman in the world, taking the top spot for the seventh year in a row. In addition to her $20 billion Wal-Mart holdings,  her late husband was an early investor in First Solar, a solar-panel manufacturer. Walton lives in Jackson, Wyo.

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