United Kingdom, March 24 -- Prince William surprised Dame Mary Berry with a video message in honour of her 90th birthday.

The former 'Great British Bake Off' judge - who celebrates her milestone birthday on Monday (24.03.25) - was visibly stunned to receive well-wishes from the Prince of Wales, who also joked about the baking legend's celebratory cake.

In a pre-recorded special episode of 'The One Show' honouring Mary which will air in UK on Monday (24.03.25) evening, host Alex Jones introduced a montage of birthday messages and said: "Starting with one from somebody very special, who says that you've taught him everything he knows about baking.

"Take it away, his royal Highness The Prince of Wales."

Mary put her hand to her chest in ...