Princess Diana's niece, Lady Kitty Spencer, married billionaire fashion businessman Michael Lewis this weekend in Rome, and wore a spectacular Dolce & Gabbana Alta Moda gown for the occasion.

The Victorian-inspired gown was custom-made specially for the bride and was crafted from delicate white lace. It featured a high neck, long sleeves, peaked shoulders and a corseted bodice, and culminated in a full lace skirt with a train. Spencer paired the gown with a dramatic cathedral-length veil.

Spencer, who has a long history of working with Dolce & Gabbana and is an ambassador for the brand, turned to the Italian designer duo for her entire bridal trousseau, with Stefano Gabbana and Domenico Dolce creating five more of her bridal looks during the weekend, too.

Following the wedding ceremony, the bride changed into a double organza hand-painted silk gown embellished with flowers and crystals for the wedding dinner. She then changed a third time on her big day, swapping into a Dolce & Gabbana cocktail dress embroidered with silver and golden beads.

The night before the wedding, Kitty wore an illusion baby-blue tulle gown and cape embroidered with cross-stitched flowers, and the day after her wedding, Kitty wore her final look; a Mikado silk dress with cutwork inserts, embellished with tiny sequins, porcelain-like appliqué flowers and double duchesse ribbons.

The couple said their vows at the beautiful Villa Aldobrandini in Rome in front of friends and family. The bride's father is Earl Spencer, Princess Diana's brother. Other guests believed to have been in attendance include Pixie Lott and Sabrina Dhowre Elba.

The groom, 62-year-old South African-born Michael Lewis, is the owner of retail brands including Whistles and Phase Eight. The couple have been dating for two years.

The 30-year-old model and aristocrat was in the Italian capital for several days prior to the wedding, sharing pictures from her trip on Instagram.