Misty Copeland, who became the American Ballet Theatre’s first African-American female principal dancer in 2015, was at the JFK Library on Monday night for a discussion and signing. Copeland’s latest book is “Ballerina Body: Dancing and Eating Your Way to a Leaner, Stronger, and More Graceful You.” She was named as the face of Estée Lauder last month. Leading her Q&A was Meghna Chakrabarti of WBUR’s
“Radio Boston.”