Here's a quick holiday photo postcard from two New York powerhouses - Lady Gaga and Barney's. Gaga's Workshop is Mother Monster's charity pop up within Barney's men's store on Madison Avenue for the festive season. On a street made famous by its Mad Men advertising past, this successful coupling of two iconic brands is an innovative, not to mention thoroughly enjoyable, form of chugging with 25% of all sales going to Gaga's Born This Way Foundation.