Charlene chose a diamond tiara designed by Paris-based jeweller Lorenz Bäumer for the evening ball on her wedding day.
The beautiful headpiece was made of 60 carats of diamond in a white gold setting, and the larger diamonds at the end of the arcs resembled the crashing of ocean waves, a fitting design given Charlene's history as an Olympic swimmer
Princess Charlene and Prince Albert II after their civil ceremony.
The Olympic swimmer flaunted an "infinite cascade" necklace made especially for her by acclaimed jewellery house Tabbah. The stunning rose gold piece was embellished with diamonds and pearls.
Princess Grace did not wear a tiara at her church ceremony to Prince Rainier III, but owned at least three in her lifetime.
The Hollywood star donned the stunning headpieces on state visits, and the tiaras have often been the focus of exhibitions in the past.
Perhaps the most historic and certainly favoured by Princess Caroline was one originally made for her grandmother, Princess Charlotte of Monaco.
The pearl and diamond tiara features hanging pear-shaped pearls set in platinum and white gold.
Princess Caroline often wore her mother Grace Kelly's tiaras, but since her marriage to Prince Ernst August of Hanover, Caroline has mostly worn tiaras from the Hanover family.