Yes, that's right. There is actually a Dance Dance Revolution game for the Winx Club on the Nintendo Wii. It's basically just like any DDR game except it uses the Winx Club graphics. This game is not too terribly interesting and graphics are actually pretty bad considering some games. In short, it could have been done better but hey, I can't change the past.
This game was originally released earlier in 2009, about winter-spring before season four came out. It was published and developed by Konami. Most of the songs are in Japanese. The game is only available in Europe and Japan.