If you haven’t had your fill of cupcakes by now (which we find hard to believe), head down to Georgetown Cupcakes on Friday and snag yourself a free frosting topped treat. The sisters Sophie LaMontagne and Katherine Kallinis are celebrating their sweet success of their TLC show DC Cupcakes, and promoting the second season’s premier by giving customers a free cupcake of their choice. DC Cupcakes part deux debuts Friday at 10 p.m.