Princess Elizabeth at wartime family pantomime Cinderella. [Photo/Agencies]

It is not known yet which pantomime costumes will be included, but the Queen and her younger sister, the late Princess Margaret, appeared on stage in their youth in a number of shows including Aladdin and Cinderella, where Elizabeth played the role of Prince Florizel.

She was once again given the male part in a performance of Sleeping Beauty in 1942, where Margaret was Fairy Thistledown and her elder sister Prince Salvador.

The focus at the Palace of Holyroodhouse will be tartan, tracking the use of the pattern in royal dress over the years. The exhibition at the Edinburgh residence will open on 21 April 2016, the day the Queen turns 90.