Members of Australia's premiere vocal gr

Sydney, AUSTRALIA: Members of Australia's premiere vocal group "Human Nature" (L to R) Toby Allen, Michael Tierney, Andrew Tierney and Phil Burton raise a glass of pink champagne in a toast at the Launch of the Official 2006 Australian Grand Prix ball in the chilly confines of the Ice Bar in Sydney 24 February 2006. Human Natture will headline the entertainment at the glitzy event and the theme for this year's ball to be held 31 March is "Ice". Australian resource Company Rio Tinto has donated a 3.35 karat champagne pink diamond valued at $US150.00 which will be auctioned with the proceeds to go to breast cancer research. AFP PHOTO DAVID HANCOCK (Photo credit should read DAVID HANCOCK/AFP via Getty Images)