Hanbok we freely wear and see these days is reminiscent of the late Joseon Dynasty ( early 20th century ) . Although the term literally means `` Korean clothing '' , hanbok today often refers specifically to hanbok of Joseon Dynasty and is worn as semi-formal or formal wear during traditional festivals and celebrations . Modern hanbok does not exactly follow the actual style as worn in Joseon dynasty since it went through some major changes during the 20th century for practical reasons .