First lady Michelle Obama, left, points out her hairstyle as she sits with former first lady Laura Bush as they participate in the "Investing in Our Future" a discussion at the Kennedy Center in Washington, Wednesday, Aug. 6, 2014, as part of the US Africa Summit. Michelle Obama and Laura Bush, first ladies of different generations and opposing political parties, are uniting for the second time in just over a year to promote U.S. relations with Africa. (AP Photo/Susan Walsh)

Associated Press
First lady Michelle Obama, left, points out her hairstyle as she sits with former first lady Laura Bush as they participate in the "Investing in Our Future" a discussion at the Kennedy Center in Washington, Wednesday, Aug. 6, 2014, as part of the US Africa Summit. Michelle Obama and Laura Bush, first ladies of different generations and opposing political parties, are uniting for the second time in just over a year to promote U.S. relations with Africa. (AP Photo/Susan Walsh)
First lady Michelle Obama, left, points out her hairstyle as she sits with former first lady Laura Bush as they participate in the "Investing in Our Future" a discussion at the Kennedy Center in Washington, Wednesday, Aug. 6, 2014, as part of the US Africa Summit. Michelle Obama and Laura Bush, first ladies of different generations and opposing political parties, are uniting for the second time in just over a year to promote U.S. relations with Africa. (AP Photo/Susan Walsh)
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