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Sasha Obama, First Lady Michelle Obama and Malia Obama at Nickelodeon's 25th Annual Kids' Choice Awards held at Galen Center on March 31, 2012 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

The Obama girls grow up

As their dad Barack Obama accepts the nomination to run for his second term as president, Yahoo looks back at how much Sasha and Malia have grown up over the last four years.