12:07 PM PT -- Well, it's official ... the bride and groom appear to have exchanged vows in front of friends and family -- and Kourtney's wedding dress may just be the highlight of what looks to be a very extravagant affair.
Photos of the ceremony are starting to surface, and you see Kris Jenner walking Kourtney to the altar -- she went with a white gown, which had a massive train that needed a couple of handlers at the back to keep it off the ground. Indeed, she looks pretty stunning.
Travis was suited and booted in a traditional black tux as he waited for his wife -- and eventually, they linked up and got on their knees side by side ... where someone fired off a close-up shot of KK's dress from the back.
Sources close to the couple say the wedding ceremony will go down at the seaside compound of Domenico Dolce and Stefano Gabbana.The estate is also where the family has been staying during their Italian getaway.
TMZ broke the story ... Kourtney and Travis also rented out the Castello Brown -- a historic structure that once served as a military lookout in the 13th century. The location will serve as the venue for the wedding reception following the ceremony.
And, get this ... our sources also tell us the entire family has been pulling exclusive looks from the D&G archives over the last 3 months to wear for the wedding weekend.
As we reported, Kourtney and Travis took the plunge off the Regina D'Italia, a $60M super yacht earlier this week. The boat was reportedly once owned by D&G as well ... so there's a ton of cross-over.