Andrea Casiraghi marries Tatiana Santo Domingo at Prince’s Palace in Monte Carlo

Monaco royal Andrea Casiraghi married Colombian heiress Tatiana Santo Domingo on August 31.

Tatiana Santo Domingo, 29, wore a custom-made Missoni gown as she posed with her new husband and their pet Boston terrier, Daphne, after the ceremony at the Prince’s Palace in Monte Carlo.

Her Missoni V-neck gown, which had three-quarter length sleeves, had “a bodice embroidered with raffia and silk thread”, according to Hello.

“The dress also featured a full-length circle skirt with a macramé effect supported by two layers of silk organza which charmingly matched her five-month-old son Sasha’s bloomers,” the magazine’s website reported.

Tatiana Santo Domingo teamed her gown with flat silver sandals and wore her hair loose with a garland of flowers on her head.

Andrea Casiraghi and Tatiana Santo Domingo, who have been together for seven years and have five-month-old son Sasha together, were greeted by cheers as they left the Prince’s Palace after the late morning ceremony.

Among the 400 guests present at a lunch afterwards was the cream of Monaco society. The principality’s reigning monarch Prince Albert, his wife Princess Charlene and his sister and mother-of-the-groom Princess Caroline were all in attendance.

Charlotte Casiraghi, the bride’s sister who is believed to be around six moths’ pregnant with fiancé Gad Elmaleh, and apparently introduced the happy couple, looked elegant in pale blue.

Also in attendance was Karl Lagerfeld, the Missoni family (minus Margherita who is due to welcome her first child any day now), Greek shipping heiress Eugenie Niarchos and the bride’s aunt, Lauren Santo Domingo.

Later, for the evening celebration, Tatiana Santo Domingo appeared to have changed into a different creation by the Italian family-owned fashion house, with longer sleeves and a different style of lace embellishment. She removed her floral headdress and instead accessorized with a pearl-embellished clutch.

The build-up to the royal wedding was documented last week by Lauren Santo Domingo, who shared a snap of Tatiana’s bachelorette aboard a luxury yacht.

The photo on Instagram showed the ladies all dressed in white lace ensembles and floral headbands, with picturesque mountains in the background.

In contrast to her guests, the bride-to-be stood out in a red dip-dye dress and matching red lipstick, and her photogenic pooch sitting on her lap.

Tatiana Santo Domingo, a regular on the New York social scene, dated Andrea Casiraghi for seven years before they announced their engagement in July 2012.

In March 2013, Andrea Casiraghi and Tatiana Santo Domingo welcomed their first child, a baby boy named Sacha, who is third in line to the Monegasque throne.