Everyone is talking about tennis star Serena Williams, although she has not played a match for months. Williams last played in January. She won the Australian Open against her sister, Venus. A short time later, she told the world she was pregnant. Even people who do not follow sports were impressed Williams could win a major tennis tournament while pregnant. Now, Williams is in the news for a different reason. Her picture is on the cover of Vanity Fair magazine. And she is not wearing clothes. Many people remember a similar Vanity Fair cover in 1991 that showed a pregnant, unclothed Demi Moore.