Denmark's Prince Frederik and Princess Mary pose at the Australian Cancer Research Foundation Charity Dinner at Boomerang House in Sydney. Denmark's Prince Frederik and Princess Mary pose at the Australian Cancer Research Foundation Charity Dinner at Boomerang House in Sydney March 5, 2005. Royal fever has been sweeping Australia as Britain's Prince Charles and Denmark's Crown Prince Frederik and Crown Princess Mary criss-cross the continent this week. REUTERS/Mick Tsikas/Pool