40. Kendra Scott
$500 Million Age: 44 Residence: austin, texas
Scott started crafting her signature gemstone earrings out of a spare bedroom in 2002. Sixteen years later, her eponymous company has 79 stores where women can customize their own pieces, choosing metals and gemstones. Following a 2016 cash infusion from private equity firm Berkshire Partners, Scott has expanded into home decor, making candles, boxes and trays.