Gucci is the most recent brand to give in to pop-up-shop fever.  They will be slumming it on Crosby Street starting today - not the 24th as shown above. The shop is being billed as the "Gucci Icon-Temporary Flash Sneaker Store’ and will feature kicks by Mark Ronson.  This will be the first stop for the flash sneaker store, which is scheduled to travel around the world. The NYC shop will be open for two weeks.