The photo has no copyright markings on it. (The complete portrait with a stamp on its back for its use in a press article can be seen here)
It was created for publicity purposes-distribution to the media. The image was meant to bring attention and publicity to the singer. (Examples of the picture on press articles on this link)
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.