WASHINGTON, DC - APRIL 07: (L-R) Nikki Giovanni, First Lady of the United States Michelle Obama, Postmaster General Megan J. Brennan, and Oprah Winfrey attend the Dr. Maya Angelou Forever Stamp Dedication Ceremony at Warner Theatre on April 7, 2015 in Washington, DC. (Photo by Leah Puttkammer/FilmMagic)
