Jeremy Corbyn dresses abysmally. That's a great thing because it's genuine

The spin-doctoring of politicians' appearances has been a fascinating development of modern times. Remember the furore over President Barack Obama’s 2014 tan suit, or the much-derided "scrunchie" Hillary Clinton chose to pull her hair back into in 2012? With the advent of social media, everyone is a political pundit, and a fashion critic, often combined. And we journalists of each school are frequently asked to do double-duty.