The reindeer jumper sported by Colin Firth's character Mark Darcy may have been ugly, but his willingness to wear the abomination his mother had knitted him told the viewer that he was a "good chap".

Princess Diana’s ‘sheep’ jumper by Warm & Wonderful costs £20 per day (byrotation). Or, shop in your local charity shop: Save the Children even has a handy online edit (shop.savethechildren).