The Queen could not hide her amusement when she toured the barracks of the Argyll and Sutherland Highlanders and saw an officer - getting ready for bed.
With his Union flag onesie - adult romper suit - and matching duvet and pillow, Lieutenant Alan Garrett looked very much at home in a mock-up of a field camp bedroom.
The Queen came across the officer during a visit to his unit's military base in Canterbury and she smiled as she spotted his additional creatures comforts of a large dram of whisky and a candelabra to set the nocturnal mood.
Major Alan Carmichael, Quartermaster of the Argyll and Sutherland Highlanders, 5th Battalion, Royal Regiment of Scotland (5 Scots), said: "Like everyone else she likes to see funny things."
He described how they had set up a field camp bedroom for the visit: "We had an officer, he was sitting on his bed - she saw the funny side in that."
The day was tinged with sadness as it was the last time 5 Scots went on parade, because from Saturday its numbers will be reduced to a company following Army restructuring.
Maj Carmichael said: "Today was an extremely proud day. We had a fantastic parade and Her Majesty was moved by our soldiers she met and enjoyed a luncheon with officers and sergeants."