Rebecca Minkoff

The designer’s leather-studded apparel and handbags regularly appear on the red carpet, but it’s the Morning After Clutch (MAC) that put Minkoff on the map. Her company, which she founded with brother and CEO Uri in 2005, sold its one-millionth MAC bag and crossed $100 million in gross sales this year. Next up: Three new company stores in the U.S. and wearable-tech products like a text-message notification bracelet and a compact mobile charger.