By Luiza Ilie BUCHAREST (Reuters) – Reed-thin and tiny, Yuja Wang looks too small to handle a shiny black Steinway concert grand piano. Yet when she was done, her powerful, nuanced playing got her a standing ovation in Bucharest. The critically acclaimed Wang, 26, often draws attention and headlines for playing in body-hugging dresses and stilettos, but what awed the audience at the George Enescu music festival on Tuesday night was her strength, accuracy and grace. At Romania’s biennial classical music festival, Wang played Tchaikovsky’s Piano Concerto No. …