The couple’s religious ceremony took place on April 19, 1956 at Saint Nicholas Cathedral in front of 600 guests and 30 million television viewers. Kelly wore a now-iconic ivory gown with lace sleeves and embroidered seed pearls, put together by Helen Rose and three dozen seamstresses. Rainier and Grace later enjoyed a wedding luncheon and drove around town in a cream and black Rolls Royce offered by the people of Monaco as a wedding gift.