Katherine Kallinis and Sophie Kallinis LaMontagne are the stars of TLC’s DC Cupcakes. They opened Georgetown Cupcake on Valentine’s Day 2008, and since then their cupcakes have won numerous awards and high praise from the likes of Oprah Winfrey and Martha Stewart. Katherine’s favorite flavor is a toss-up between Peanut Butter Fudge and Salted Caramel and Sophie’s favorite flavor is Chocolate Hazelnut.