Monochrome is one of those looks that never really goes out of fashion - possibly because, when it's done right, it can give a touch of class to an outfit. This black and white barrel bag from River Island is £29.99, but looks more expensive. It'll look great teamed with black or white shift dresses, and has a bit of a retro, 60s look to it, which will make it easy to match, given the proliferation of 60s style clothes that are still floating around the shops at the moment.
Related: Monochrome bags at Oasis and Accessorize | Fendi's Monochrome 'B' Bags | Coast's black and white 'Susie' handbag