Queen Elizabeth's Flying Wardrobe is supposedly a legacy of Queen Elizabeth II's visit to the Congo. It was an aircraft that was used to transport her wardrobe for her trip. The airplane was featured in CNN's "Anthony Bourdain's No Limits" episode on the Congo. According to Anthony Bourdain's twitter feed, it was also called Queen Victoria's Flying Wardrobe, but the TV show only featured the Elizabeth variant of the name.
The plane appears to be a Shorts C-23 Sherpa, a plane introduced much later than the 1954 visit of Queen Elizabeth II to the Congo.