And when it came to designing Katie's bridal gown, Armani tells PEOPLE exclusively that he wanted the dress to match Holmes's personality.
"Katie wanted a simple, elegant dress that was rich in material with a slim silhouette," he says. "I couldn't have been more in agreement. I wanted to make it modern but at the same time, complement the sweetness and energy she conveys."
The result? An off-the-shoulder Armani gown with an ivory silk train adorned in Valenciennes lace and Swarovski beaded crystal embroidery. She accessorized her gown with an ivory tulle floor-length veil and ivory silk shoes.
More on Their Wedding
Armani also dressed the rest of Cruise & Holmes's family. Here are all the details:
Holmes's mom, Kathleen, put on a Giorgio Armani Privé evening dress in rose silk; Her neckline was trimmed with tulle and black embroidery.
Holmes's sister and bridesmaid, Nancy Holmes, wore a black charmeuse, silk-layered evening dress, with an empire waist and floor-length skirt. Her off-the-shoulder neckline was made of black lace.
Cruise's mother Mary Lee Cruise wore a silver silk Giorgio Armani Privé evening dress with rose appliqué detail at the waist and shoulders.
Cruise's sister Cass Cruise wore a deep blue velvet suit with a fitted jacket featuring black taffeta plisse details at the waist.
Finally, there's Suri. For the wedding, Tom & Katie's 7-month-old daughter wore various layers of organza and chiffon, which, according to Armani, was "inspired by her mother's bridal grown."
Get more coverage on PEOPLE's Tom & Katie Wedding Blog