'No regrets' for ballet bad boy as he premieres show in Moscow In his Moscow dressing room, dancer Sergei Polunin pulls off his T-shirt to show the tattoo of President Vladimir Putin on his chest as the Ukrainian-born ballet star premieres his new show in the Russian capital. The 29-year-old, who has been acclaimed by critics a ballet great on the level of Mikhail Baryshnikov or Vaslav Nijinsky, has long been dogged by the label of "the bad boy of ballet".