Casiraghi's second wedding look was a stunning white strapless gown by Chanel, photographed by Félix Dol-Maillot.
Charlotte was seen wearing a stunning necklace, that appeared to be the same Cartier diamond tiara necklace that her grandmother had received as a wedding gift in 1956 when she tied the knot with Prince Rainier III.
The stunning necklace consists of three strands of brilliant-and-baguette-cut diamonds set in platinum.
According to Brides, the evening party took place at the Monte Carlo Beach Hotel.
A source revealed to People that Rassam and Casiraghi have "actually known one another for a while," explaining that they apparently had "a remote friendship of many years." Love blossomed when they "were reconnected" over Christmas 2016 in Paris.
Congratulations to the couple!