The picture, which depicts Lord Robert Crawley (Hugh Bonneville) and daughter Edith (Laura Carmichael) standing in one of their impressive stately rooms, features an unexpected decoation on the mantelpiece; a very modern plastic water bottle. Nestled between two ornate vases, the otherwise innocuous object sticks out like a sore thumb.
Spot the water bottle! Picture: @downtonabbey/PA
'Downton Abbey' is known for its meticulous attention to detail, and they even employ an expert, Alastair Bruce, to make sure the show is historically accurate. However it's not actually the first anachronism in the show, with previous episodes featuring television aerials, double-yellow lines and even a modern conservatory. As such, this gaffe didn't go unnoticed by leagions of eagle-eyed fans online when the picture was uploaded onto social media.
Continue reading: Downton Abbey Makes Amusing Mistake In New Promotional Images