Nude Miss Universe Winners

NUDE FOR CHARITY:  Riyo Mori is the next former Miss Universe who has opted to take off her clothes. Earlier last year, Alicia Machado (1996) posed nude for the Mexican Playboy magazine, and Puerto Rico's Zuleyka Rivera (2006) got naked wearing nothing but Swarovski's jewels. However, Riyo got naked not for money or for pleasure but for charity. Riyo is using her nakedness as part of her campaign against breast cancer. In the photo taken by famous Japanese photographer Mika, Riyo is covering her left breast. She is also wearing a spectacular necklace by Boucheron and exquisite sandals by René Caovila.

Just an additional note about Alicia Machado (pictured below), she currently lives in Mexico City. On 25 June 2008, Alicia gave birth to her daughter, Dinorah in a Miami hospital. Machado is reserved about her relationship with the father of Dinorah, who is said to be a 48-year-old Mexican businessman.

According to rumors, the 31-year-old model-turned-actress hasn't revealed the identity of the father because he's allegedly a married man. However, the Venezuelan beauty confirmed in an interview with PEOPLE EN ESPAÑOL that she kept quite about his identity because he isn't involved in the entertainment world and she'd like to respect his privacy.

The most important task at hand for Machado right now is to raise a healthy daughter, and to give her all the love in the world.