There's no set rule book when it comes to dressing your bed for the season, especially if your bedding set is also suitable for other seasons. A striped duvet cover or a plain colour set won't look out of place before the countdown to Christmas begins, for example. Typically however, we would suggest waiting until after you've taken down your Halloween decorations before you begin getting festive. And most people follow the 12 days of Christmas to get in the spirit. But of course, it's never too early for Christmas in our eyes.