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Mass Quinceanera thrown in Mexico City

Dieu Nalio Chery / AP

Fifteen-year-old girls pose for a group picture at the Franz Mayer museum before a mass Quinceanera birthday celebration in Mexico City, April 28.

Three-hundred forty-eight girls dressed up for their 15th (Quinceanera) birthday celebration, a tradition dating back to the Spanish colonial era when 15- and 16-year-old girls had their official debut in society. The Quinceanera marks the transition from childhood to adulthood and is common in Mexico and other Spanish-speaking countries.

Dieu Nalio Chery / AP

Fifteen-year-old girls take pictures of themselves during a mass Quinceanera.

Edgard Garrido / Reuters

Girls dressed in evening gowns laugh inside a bus.

Dieu Nalio Chery / AP

A 15-year-old girl shouts from the inside a bus during a mass Quinceanera.

Dieu Nalio Chery / AP

Cecilia, center, plays with her dress.

Dieu Nalio Chery / AP

A 15-year-old girl gets ready for a mass Quinceanera birthday celebration.

Edgard Garrido / Reuters

Girls dressed in evening gowns pose for photographs at Zocalo square in Mexico City.