JUST in time for Fashion Week, you can pledge your allegiance to Kate Moss – and wear it, too. The Great Kate graces Burfitt’s limited-edition silk T-shirt. The doodled duds are available at Space Mercer (115 Mercer Street, between Prince and Spring streets, (212) 730-2266), the new SoHo boutique that carries clothing from Rag and Bone, Doo Ri and Alexander Wang – among many others – in a crisp, refined space. Oh, and the shows start Friday (the “duh” is implied).