Buckingham Palace doesn't see that many overnight guests so the queen really had no excuse not to have fresh sheets for the Bushes on their recent visit.
But with Christmas on the way and lots of guests coming and going, will you be changing the sheets for every overnighter? Will your sheets be freshly laundered and pressed with lavender oil each time or just aired and shaken between guests?
Jenni is joined by writer, Christina Hardyment and Kim Woodburn and Aggie Mackenzie from Channel 4's How Clean Is Your House? to discuss what makes a 'sheet slut'. How Clean Is Your House? is published by Penguin Books