Whittle was selected to play for Australia at the 1996 Atlanta Olympics. That team would go on to win a Bronze medal earning Australia its first ever international basketball medal for either men or women at the senior level. At the 1998 World Championships held in Germany, Whittle would win her second bronze medal. Playing in front of a home crowd at the Sydney 2000 Olympics, Whittle won a Silver medal, her second medal at an Olympic Games. At the 2002 World Championship held in China, the Opals and Whittle would win their 4th consecutive medal in international play, claiming another Bronze.