If you're living somewhere with access to a tumble dryer, you can get away with just one duvet cover, fitted sheet, and pillowcases, as you can wash and dry everything in just a few hours. If you're forced to air-dry, having two sets is really useful so you can use one while you wash and dry the other. Bedding is one of the easiest ways to add a bit of personality to your room, so don't be afraid to opt for a bold print like the George Green Floral Snake Easy Care Duvet Set (£10).
Top tip: Prints and darker colours also hide spills and marks easier than plain colours, so don't be afraid to stray from classic white.