Image: Michael Kovac/Getty Images for American Express Publishing/ Image: Pascal Le Segretain/Getty Images

One billion dollars. It’s a figure that most of us wouldn’t amass in 100 lifetimes. But these super-rich ladies all managed to accrue just such a fortune before the age of 45. Based on numbers from Forbes’ 2016 The World’s Billionaires list, here’s a look at 20 of the youngest.

Image: LOR Foundation

20. Amy Wyss – $1.8 billion

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Amy Wyss worked at her father’s medical equipment firm, Hansjoerg Wess, for several years before receiving a cut of the $20.2 billion he made from selling it. And keen to give something back, the 45-year-old philanthropist has since established the LOR Foundation to help the rural communities of Intermountain West.

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