Denim Skirt was first popular in
1970s
In the 1960s, hippies first came up with the idea of recycling old denim jeans into long denim skirts, by opening the inseams, and inserting pieces of triangular denim (or any other fabric) in the front and, unless a tall slit in back is preferred, also in the back of the opened-up trousers. Denim skirts were first introduced in mainstream fashion lines in the 1970s, and since then have grown in popularity. Circa-1983, denim miniskirts—with a pencil skirt silhouette—became a popular teenage fashion. They were initially in darker blues, but eventually pinstripes (light blue on darker blue, red on black) and acid wash. The popularity of denim skirts waned in the tail end of the 1980s until re-emerging in the latter portion of the 1990s.
Source:http://famecherry.com/fashionista-now/fashionista-now-how-to-wear-denim-skirts-fashion-inspiration/
