Prince Louis was spotted blowing raspberries and attempting to cover his mum's mouth in a cheeky display during the Sunday pageant.
The Duchess of Cambridge kept a watchful eye over her four-year-old son who could be seen pulling a series of funny expressions.
The prince wandered over to sit on Prince Charles's lap and even upturned his nose with his thumb during the show as it was evident that he was growing tired and restless, reports the Mirror.
