I've never been a fan of black and white for work wear, the traditional black skirt/trousers and white shirt make me think waiting staff not super professional. Here though black and white has been lifted out of the humdrum by a few neat tricks. First of all and most obviously is the red shoes, these add life into the outfit, giving it a shot of fashion and fun. Caroline's use of a structured pinafore and crisp shirt stops it looking cheap. If you do wear black and white clean sharp lines are a must, for business wear think structural not sloppy.