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Prince Rainer and Princess Grace pose with the bridal couple ahead of the Pre-Wedding Ball of Princess Caroline (wearing Princess Grace’s Small Diamond Tiara) and Philippe Junot at the Prince’s Palace of Monaco in Monte Carlo on this day in 1978. Other guests included Queen Anne of Romania (in her Danish Sapphires), the Aga Khan and Begum Salimah Aga Khan, and Hollywood stars Ava Gardner, Cary Grant and Frank Sinatra. The couple divorced in 1980, and the Princess has remarried twice.
