Women might wear a skirt with a tartan pattern on it and that would still be a tartan skirt. You are probably thinking of a man's Highland outfit and that is called a kilt.
A skirt which is tartan in colour.
a Kilt.
kilts
because it is RIGHT!
Kilt is the word you are probably looking for. Though it should be mentioned all kilts are not tartan
It is called a Kilt, the traditional dress of men and boys in the Scottish Highlands since the 16th Century
The tradional dress is the same of Ireland.
Since the 19th century, the kilt has become associated with the wider Scottish and Gaelic cultures. Kilts are often made of a woolen cloth in a tartan pattern. Usually worn at formal events, competitors also wear this Scottish outfit at the Highland Games.
Clothes that were popular in 1991 include jeans, t-shirts, sweaters, hoodies and leotards. Buttoned shirts, leggings, tartan skirts and drainpipe jeans were also fashionable.
The Falkirk tartan is the oldest tartan that's been discovered.
Columbia Tartan
The Tartan was created in 1906.