Rumour has it black and white cookies are an East coast delicacy. But I swear my mum knows of a bakery in Berkeley, CA, that makes them. Bottom line: they're hard to find and celebs are dressing like them! A classic combo — the white shirt and black skirt — has a special way of reinventing itself. As exhibited by these lovely ladies, there are many routes one can take. Whether it's laid back luxe per Kate, artsy cool a la Chloe or sassy sophisticate like Kristen, this combo is limitless.