Brief excerpt from her Wikipedia bio
After being discovered by the photographer David McCabe, she moved from Detroit to New York City to pursue a modeling career. In January 1965, a sketch of Luna appeared on the cover of Harper's Bazaar. She became the first African American model to appear on the cover of British Vogue (March 1966); the photograph was by David Bailey. According to The New York Times, she was under exclusive contract to the photographer Richard Avedon for a year at the beginning of her career.
An article in Time magazine published on 1 April 1966, "The Luna Year", described her as "a new heavenly body who, because of her striking singularity, promises to remain on high for many a season. Donyale Luna, as she calls herself, is unquestionably the hottest model in Europe at the moment. She is only 20, a Negro, hails from Detroit, and is not to be missed if one reads Harper's Bazaar, Paris Match, Britain's Queen, the British, French or American editions of Vogue.
I love this photo of her.