His Majesty, 77, donned his traditional kilt and tartan during his stay at the estate in Caithness, which was lovingly developed and restored by The Queen Mother.

His Majesty, 77, donned his traditional kilt and tartan during his stay at the estate in Caithness, which was lovingly developed and restored by The Queen Mother.

King Charles is spending his summer holiday at the Castle of Mey in Caithness and photographs, released today, show the monarch wearing a kilt