Kate Caught Smiling and Twirling Her Hair At Sombre Veteran's Ceremony

Unlucky for Kate, she was photographed smiling and twirling her ringlets at a sombre veteran's memorial in London

Its an old rule of celebrity that you never allow a smile to cross your lips at a funeral, and one that the future Queen of England will no doubt be learning the hard way this morning.

For Kate Middleton rarely puts a foot wrong when it comes to the tricky art of the public appearance but yesterday's appearance at the annual remembrance ceremony was a rare fail, thanks to couple of unfortunate pictures.

How not to be photographed on Veteran's day (Max Mumby/Indigo)

For this morning's photograph's on the front pages all show photos of Kate absent-mindedly twirling her hair and smiling at Princess Sophie.

How to be photographed on Veteran's day (Matthew Lloyd)

While the accompanying copy does not suggest in any way that Kate was acting inappropriately, and it surely just a moment snapped by an alert photographer, pictures have an unfortunate way of speaking volumes, and these shots have undermined the serious message of Remembrance day.

Prepare for a grim-faced Kate at next year's event.