A picture of the pair was uploaded to Instagram, showing Charlotte sporting a long-sleeved dress by Diambattista Valli.
The groom donned a well-tailored navy suit with a silk baby-blue tie with a pocket square for the nuptials.
According to People, guests to the wedding included Charlotte's uncle, Prince Albert II, along with his wife Princess Charlene on the bride's side.
Grace Kelly - who became royalty after marrying the tiny European country's Prince Rainier III - died after she suffered a stroke and crashed her car.
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