S.A.R. la Princesse Caroline de Hanovre, S.A.S. le Prince Albert II de Monaco and Charlene Wittstock arriving at the Bal de la Rose, Rock'N Rose, in Monaco, March 28, 2009. The Bal de la Rose is a traditional annual charity event in Monaco Principality. BAL DE LA ROSE "ROCK'N ROSE" 2009 A MONACO - Photo