Pop Life Art contains a comprehensive listing of celebrities (actors, singers, musicians, athletes, etc.) that create fine art paintings, drawings and photographs. I believe that it contains the most complete listing of celebrity artists on the web. It includes links to the artists' websites and online galleries where their artwork can be viewed and purchased. I currently have more than 50 celebrities listed, including Ronnie Wood, Paul McCartney, Grace Slick, Pierce Brosnan, Viggo Mortensen, and many more.
The photo on the left is Ringo Starr posing in front of his artwork.