A woman gives the last touches to the dress of a 15-year-old girl as she gets ready to participate in the mass Quinceanera Party, in Mexico City, capital of Mexico, April 28, 2012. The Quinceanera Party is a Mexican tradition marking the transition from childhood to adulthood. A massive party was organized in Mexico City Saturday to celebrate Quinceanera for girls with limited economic resources. [Xinhua]