Princess Mary at her friend's birthday celebration, August 21, 2010

Princess Mary of Denmark arrives at her friend and bridesmaid, Amber Petty's 40th birthday celebration at The Promethian on August 21, 2010 in Adelaide, Australia. Princess Mary is in Adelaide visiting longtime friend and bridesmaid Amber Petty, who's celebrating her 40th birthday. She also spent time with family and friends in Hobart, who she hasn't seen since her last Tasmanian visit in 2008.