When dancer Camila Prins entered Sao Paulo’s Carnival parade grounds, a costume of feathers clinging to her sinuous body, she fulfilled a dream of feminine beauty nearly three decades old. Prins says she first realized she wanted to be a woman at a Carnival party at age 11, when, like the other boys, she was allowed to dress like a girl as part of the burlesque festivities. Now, in the final minutes of Saturday, she became the first transgender woman to lead the drum section of a top samba school in either of the renowned Carnival parades put in Sao Paulo and Rio de Janeiro. Prins, 40, was hand-picked to be “godmother” of the Colorado do Brás samba school’s drum section, an iconic role fought over by dozens of models and TV celebrities. Her duty was to dance infectiously for 65 minutes in front of the drummers, using her legs to drive their rhythm while judges assessed the school’s parade.