Originally, "kimono" was the Japanese word for clothing. But in more recent years, the word has been used to refer specifically to traditional Japanese clothing. Kimonos as we know them today came into being during the Heian period (794-1192).
From the Nara period (710-794) until then, Japanese people typically wore either ensembles consisting of separate upper and lower garments (trousers or skirts), or one-piece garments. But in the Heian period, a new kimono-making technique was developed. Known as the straight-line-cut method, it involved cutting pieces of fabric in straight lines and sewing them together. With this technique, kimono makers did not have to concern themselves with the shape of the wearer's body.