The world kimono literally means "clothing", and is the most recognizable garment from the Japanese culture - even not being the most used anymore.
During the Meiji period (September 8, 1868 - July 30, 1912; when Japan moved out from being a feudal society), the western culture and fashion started to get imported and became more popular; kimonos now are more expensive and used only in special occasions.
Due to this, many people nowadays won't know how to properly put and tie a kimono (since it's a complicated procedure), having to ask help for their mothers or take a course at a kimono school.
A kimono has a lot of different parts:
Front
Rear
(picture and info taken from Japan Zone)