Girl Wearing A Kilt

Though the origins of the Irish kilt continue to be a subject of debate, current evidence suggests that kilts originated in the Scottish Highlands and Isles and were adopted by Irish nationalists at the turn of the 20th century as a symbol of Celtic identity.
A garment that has often been mistaken for kilts in early depictions is the Irish lein-croich, a long tunic traditionally made from solid colour cloth, with black, saffron and green being the most widely used colours. Solid coloured kilts were first adopted for use by Irish nationalists and thereafter by Irish regiments serving in the British Army, but they could often be seen in late 19th and early 20th century photos in Ireland especially at political and musical gatherings, as the kilt was re-adopted as a symbol of Gaelic nationalism in Ireland during this period.
Within the world of Irish dancing, boys' kilts have been largely abandoned, especially since the worldwide popularity of Riverdance and the revival and interest in Irish dancing generally.