We love baby items that do double duty! When Rachel Zoe showed off her glamorous Alexander McQueen diaper bag, many mamas developed an immediate case of bag envy. Forget the fact that most of us don't have designers creating custom bags for us, we also can't afford to spend a paycheck or two on a bag we'll only carry for a year or two. For those of us who need to rationalize our purchases, there just might be some justification for splurging on a designer diaper bag – many are large enough to carry a laptop and files once we return to work. I've done the dirty work in scoping out the big bags, the rationalization is up to you!