The Wedding of the Century: Grace Kelly Marries a Prince
On April 19, 1956, American film star Grace Kelly married Prince Rainier III of Monaco in a cathedral ceremony watched live by more than 30 million television viewers.

More than 30 million people watched a Philadelphia girl become a princess.
On the morning of April 19, 1956, Grace Kelly stepped out of the Prince's Palace of Monaco and into the kind of scene Hollywood could never have staged. Some 700 guests filled Saint Nicholas Cathedral in Monaco-Ville, among them Cary Grant, Ava Gardner, David Niven, and Aristotle Onassis. Outside, thousands of Monegasques crowded the streets. And through the new miracle of Eurovision, more than 30 million viewers in nine countries watched the ceremony live — the largest royal audience television had ever carried.
The bride was 26, an Oscar-winning film star at the very peak of her fame, known for films like Rear Window and To Catch a Thief. The groom, Rainier III, was the 32-year-old sovereign prince of Monaco, a tiny principality on the French Riviera then known mostly for its casino. Their romance had begun the year before, when Kelly visited the palace during the Cannes Film Festival. She had sailed from New York aboard the SS Constitution with 80 pieces of luggage, her family, members of the press, and her beloved poodle — an arrival staged with all the theatricality of a film premiere.
The day before, on April 18, the couple had been legally married in a civil ceremony in the palace's baroque throne room before 80 guests, including representatives of 24 nations. But April 19 was the day that entered history: the Pontifical High Mass, conducted by Bishop Gilles Barthe of Monaco, with a congratulatory message from the Pope read at the close of the service.
And then there was the dress. Designed by MGM costume designer Helen Rose — a wedding gift from the studio — it was made of 25 yards of silk taffeta, 100 yards of silk net, and 125-year-old Brussels rose point lace, with a Juliet cap bejeweled with seed pearls and orange blossoms. A tulle veil stretched 90 yards. It remains one of the most imitated wedding dresses in history.
The marriage was billed as "the wedding of the century," and it earned the title. It was also a turning point for Monaco itself. Under Rainier and his new princess, the quiet gambling enclave began its transformation into a global symbol of glamour — culturally, socially, and economically changed forever. Grace, who had traded a film career for a throne, threw herself into her adopted principality's charities and arts.
Princess Grace died in 1982, but the wedding she made famous still sets the template for every televised royal wedding that followed. Some fairy tales turn out to be real — and this one was watched, live, by the whole world.
Photo: Los Angeles Times, CC BY 4.0 (via Wikimedia Commons).

