Do one thing, and do it well. This advice is a little clichéd, but like most clichés, it has some truth to it -- especially in business. Andie Swim has taken that maxim to heart and is keeping things super simple by selling one fantastic product. The brand offers classic, luxury one-piece bathing suits for women, in just 3 simple styles. And that’s it! You might imagine selling one type of product is limiting, but it’s actually the opposite, according to Melanie Travis, the CEO and Founder of Andie Sw