Athina Onassis' husband Alvaro Alfonso de Miranda Neto (also known as Doda) of Brazil clears a jump on his horse Ad Tomboy during the Athina Onassis International Horse Show in Rio de Janeiro September 2, 2011. Athina Onassis is a competitive show jumper and the only surviving descendant of her grandfather Aristotle Onassis, the Greek shipping magnate. REUTERS/Ricardo Moraes (BRAZIL - Tags: SPORT HORSE RACING PROFILE EQUESTRIANISM)