Photography by Ellen Von Unwerth, Kourtney Kardashian/Instagram
Kardashian, 43, wed Barker, 46, in Portofino, Italy on Sunday, donning a white lace Dolce & Gabanna minidress, along with a cathedral-length lace veil, featuring an embroidered Virgin Mary.
The Poosh mogul posted a behind-the-scenes peek on her Instagram story at the details behind her bridal getup, including her KKB-embroidered minidress. In another snapshot, she shared her black party pumps for the reception, next to a decadent bouquet of red roses.
Red rose petals were arranged in a Byzantine-style heart on the bed of the couple's suite in another photo, along with Kardashian's black thigh-high stockings amid the florals.
Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.
At their welcome dinner, Kardashian modeled a glamorous wine-colored Dolce & Gabbana gown featuring a bustier bodice and sheer overlay. Barker wore a black suit, sans shirt, his signature shades and a chain link necklace.
At the pre-wedding lunch on Saturday, Kardashian and Barker served gothic-chic in coordinating Dolce & Gabbana outfits, including a vintage black mini-dress from the label's spring/summer 1998 collection.
Kardashian also opted for Dolce & Gabbana at their Santa Barbara courthouse ceremony earlier this week, making her marriage to Barker legally binding after a spontaneous "practice wedding" in Las Vegas following the Grammys on April 4.
Her look for the legal ceremony, also a minidress, featured a bustier top and embroidered "bleeding heart" detailing on the bodice.
At the time, a source close to Kardashian told PEOPLE that the couple "couldn't be happier."
RELATED VIDEO: Kourtney Kardashian and Travis Barker Dance to 'Can't Help Falling in Love' at Italian Wedding
"After they got married in Santa Barbara, they came back to L.A. to be with their kids," the insider added. "Kourtney was beaming. She feels beyond lucky to be Travis' wife."
But that's not all for the peacocking newlyweds — they're also planning another reception in Los Angeles upon their return from Italy, meaning the fashion show isn't over yet.