Christelle GuignardChristelle Guignard is a retired French alpine skier. She competed at the 1984, 1988 and the 1992 Winter Olympics.Doping banGuignard came third in the giant slalom at the FIS Alpine [World Ski Championships 1989] in Vail, but since her doping sample was found positive for nikethamide, she lost the bronze medal. She was also banned from sport for 1 year.