direct to your inboxPrince Charles and wife Camilla have shared a Christmas message with fans - but nobody is allowed to comment on it, after a social media backlash.The pair took to Twitter to share a photo of themselves and a festive message on their Clarence House account.Their message read: "Wishing you all a happy Christmas and here’s to a better New Year!" This snap was taken earlier this year by a member of the royals' staff at Birkhall, their home in Scotland, reports the Express.