Kate Middleton didn't defy 'tradition' on Prince Louis's birthday

Veteran Royal commentator Richard Fitzwilliams had told Express previously that Kate Middleton might refrain from posting any pictures of Prince Louis on his sixth birthday.

"Royal fans will be disappointed by the lack of a photograph to mark Prince Louis's birthday. This is a shame because of the vexed issue of her Mothering Day photograph," he had said.

However, the Princess of Wales put an end to all the speculations by posting a picture of her youngest son.