45. Hayley Barna and Katia Beauchamp

Cofounders, Birchbox

In April, subscription cosmetics service and e-commerce website Birchbox raised $60 million in a Series B round from Glynn Capital Management, Consigliere Brand Capital, Aspect Ventures, Accel Partners, First Round, and Viking Global Investors. In July, Birchbox opened its first physical storefront in SoHo. The four-year-old startup is still growing rapidly. RetailTouchPoints says Birchbox has "800,000 subscribers, 800 brand partners, 6,500 products in the e-Commerce shop and 250 employees worldwide."