Gorgeous Pictures From the Monaco Royal Wedding

Pierre Casiraghi and his girlfriend, Beatrice Borromeo, made it official on Saturday when they got married in a civil ceremony at Monaco's Pink Palace. Valentino, the design house behind the bride's pale pink Valentino Haute Couture dress, shared a picture of the affair on Sunday. The Instagram image shows the new spouses smiling and locking eyes on a balcony. After their ceremony, Beatrice changed into another gorgeous gown for their wedding reception at Monaco's Hotel de Paris, to which she arrived in a Rolls-Royce.

The couple, who have shared plenty of sweet moments in their six years together, later celebrated their nuptials with a garden party at the palace. The event, which Prince Albert called "mostly informal," was held outdoors and had a carnival theme. Their "low-key" wedding will be followed by another, more lavish ceremony and reception on Beatrice's family's private island in Italy next weekend.

The couple isn't the only royal duo to tie the knot this year — Prince Carl Philip and Princess Sofia of Sweden got married in June and showed plenty of PDA during their big day.