Michelle Obama

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Singers Melissa Etheridge, left, and Janelle Monáe, applaud Patti LaBelle, right, as she is introduced in the State Dining Room of the White House Washington, Thursday, March 6, 2014, during a workshop for students as part of the “In Performance at the White House” series, celebrating female artists as the "foremothers” of American music, hosted by first lady Michelle Obama. (AP Photo/Jacquelyn Martin)

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First lady Michelle Obama speaks in the State Dining Room of the White House in Washington, Thursday, March 6, 2014, with singers, from second from left, Melissa Etheridge, Janelle Monáe, and Patti LaBelle, during a workshop for students as part of the “In Performance at the White House” series, celebrating female artists as the "foremothers” of American music. (AP Photo/Jacquelyn Martin)

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Singers Melissa Etheridge, left, and Janelle Monáe, applaud Patti LaBelle, right, as she is introduced in the State Dining Room of the White House Washington, Thursday, March 6, 2014, during a workshop for students as part of the “In Performance at the White House” series, celebrating female artists as the "foremothers” of American music, hosted by first lady Michelle Obama. (AP Photo/Jacquelyn Martin)

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First lady Michelle Obama talks at the Jessie Trice Community Health Care Center in Miami, Wednesday, March 5, 2014, to highlight the work that hospitals, doctors and clinics are doing to educate their patients about the Affordable Care Act and how patients can get insurance. (AP Photo/Luis M. Alvarez)

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FILE - This July 9, 2013 file photo shows First lady Michelle Obama speaking to children at the annual kids "State Dinner" in the East Room of the White House in Washington. Michelle Obama is working with Epicurious and the Departments of Education and Agriculture on a third nationwide recipe contest to promote healthy eating among kids. The third Healthy Lunchtime Challenge ends in the summer with a kids’ “state dinner” at the White House. Some of the winning recipes will be served. (AP Photo/Jacquelyn Martin, File)