Kristy Giteau will join her brother Matt as Australian rugby internationals when she debuts for the Wallaroos against Samoa in a must-win World Cup qualifier this weekend.
The match in Apia kicked off just 12 hours before Matt played for the Wallabies against the Springboks in South Africa.
Kristy has previously represented her country in rugby league while also touring China and the USA with the Australian schoolgirls basketball team.
The winner of the match in the Samoan capital will secure the Oceania position in the 2010 Women's Rugby World Cup to be held in England, with New Zealand already qualified as defending champions.
Kristy Giteau will play on the wing against Samoa.