Its called "La Grande Odalisque" (1814) and is by the French artist Jean Auguste Dominique Ingres (1780 - 1867).
Michael Thompson today one of America's leading fashion photographers took this photograph in early 2003 from the actress Julianne Moore. Later it was used as a cover for American Photograph magazine.
Moore took a similar position, also the decoration is alike. But the important thing is the perfect surface and illumination. Ingres wanted to show an object of luxury, and here is the quotation of Thompson perfect.