The history of kilts
In the words of Wikipedia...
The history of the kilt stretches back to at least the end of the 16th century. The kilt first appeared as the belted plaid or great kilt, a full-length garment whose upper half could be worn as a cloak draped over the shoulder, or brought up over the head as a hood. The small kilt or walking kilt (similar to the 'modern' kilt) did not develop until the late 17th or early 18th century, and is essentially the bottom half of the great kilt.
The word kilt comes from the Scots word kilt meaning to tuck up the clothes around the body, although the 11th edition of the Encyclopædia Britannica (vol. 15, p. 798) says the word is Scandinavian in origin. The Scots word derives from the Old Norse kjalta (meaning lap, fold of a gathered skirt).