Not all the “box of the month” clubs have found success, but one that took a slightly differentiated route – full-sized products, shipped quarterly – has bootstrapped its way to $15 million in annual revenue, investors tell us, and has recently taken in its first outside capital. FabFitFun, a women’s lifestyle subscription box company, is announcing that it’s raised $3.5 million in funding led by New Enterprise Associates and Upfront Ventures in order to continue to grow its business.