Plaid may come and go as a fashion trend, but for the royal family, it's a staple, no matter the year. Plaid as a pattern actually originated in Scotland, and is commonly referred to as tartan.

Clan tartans are perhaps the most well-known type of tartan, representing specific Scottish families or clans. Each clan has its own unique pattern, often with historical significance. MacLeod Tartan ...

A new exhibition attempts to unravel the complicated legacy of the iconic checked cloth worn by rebels and royals alike. In this archival photo, a woman decorates tartan “bonnets.” Known as plaid in ...