Hmmm? I wonder? Ah. Haha. Yes, a lot of people wear kimonos in Japan even in this modernized era. It's a tradition, and it will never be lost. Just visit a Temple, and you will see a bunch, wearing kimonos.
Reply to the Dood guy's question: They are different in ways. Kimonos are made with silk, whereas an yukata is made of cotton. The former is very expensive, comparatively. In addition, kimonos are woren mainly for special occasions, whereas the yukata are very casual, and they fit for daily purposes. Oh yeah, you can wear an yukata without an underwear. Thought you might want to know all of the details. Haha.