The teen entrepreneur, 19, showed off her famously voluptuous curves in a tiny unclad string bikini as she relaxed poolside in Los Angeles as she celebrated her beauty company’s, Kylie Cosmetics, which earned an incredible $420 million in retail sales in just 18 months! She toasted her achievement by posing for a series of seriously sexy swimsuit shots on Wednesday afternoon, just hours after news of her business success was revealed. See more photos below