A typical herring Lassie
Tartan picture: Crown copyright - Source: The Scottish Register of Tartans
The pictures above are placed on a background of 'Royal Stewart Tartan' It is common knowledge that anyone may wear any tartan of their choosing. However, there are many that wish to wear a tartan that is linked to their name or ancestoral name.
It is appropriate for 'The Royal Stewart Tartan' to be worn by any of Her Majesty Queen Elizabeth 11 subjects
Source Wikipedia: The Royal Stewart tartan is the best known tartan of the royal House of Stewart, and is also the personal tartan of Queen Elizabeth II. It is appropriate for all subjects of Elizabeth II to wear the Royal Stewart tartan in much the same way that clansmen may wear the tartan of their clan chief. Officially, the tartan is worn by the pipers of the The Black Watch (Royal Highland Regiment) of Canada, Royal Scots Dragoon Guards, and the Scots Guards, as well as a select few civilian groups. The 5th Bolton Scout Group and the 5th Potters Bar Scout Group wear the scarf, (neckerchief/necker) officially, with permission from the Queen, and the Queen's Bands (of Queen's University) wear the tartan as part of their official uniforms. So too do the Winnipeg Police Pipe Band. The tartan may also be worn by members who took part in a patrol leaders training course. .