It was time to lay down the law on the Jubilee balcony. Louis was playing up and mum Kate decided that she was going to step in - and thanks to a lip reader we can actually know what she was saying.
Prince Louis was a handful - like any four year old - but his winsome antics also won the hearts of millions. He was all over the place - holding his hands over ears as loud planes flew over, shutting his mum up but putting his hand over her mouth and sticking his tongue out at her and generally being a handful - like all four year olds.
His exhausted parents released a statement after the event thanking everyone for their amazing support at the Queen’s Platinum Jubilee celebrations - with the footnote: “We all had an incredible time, especially Louis... “