Born Carlette D. Guidry in Houston, Texas in 1968, she finished eighth in the 100 metres final at the 1991 World Championships in Tokyo, before going on to win Olympic relay gold at the 1992 Barcelona Olympics, where she also finished fifth in the 200 metres final. She won a bronze medal in the 60 metres event at the 1995 IAAF World Indoor Championships., and also finished fourth in the World Championships 100 metres final that year. At the 1996 Atlanta Olympics, she won a second Olympic relay gold (she ran in the heats but not the final) and finished eighth in the 200 metres final.