Do you see what's wrong with this picture?
A lot of people have been caught out by this awkward mistake, including Dazed magazine:
And a Metro writer:
And a HuffPost UK writer:
The Times too, but they deleted it. Spoilsports.
Armando Ianucci was victim of the slip-up:
And so were members of the general public:
But don't worry, we think we've tracked down the culprit.
Keiran, it's all your fault. You made people look like they were tweeting about an election from 1,800 years ago.