The big day is almost here! For weeks, we’ve been eating up every detail surround the wedding of 31-year-old Kim Kardashian and 26-year-old basketball star Kris Humphries. Now, sources tell HollywoodLife.com that hours before the nuptials, the estate is already bustling with activity — including the arrival of a very special and important delivery!

“Several dresses arrived at the estate in a limo at 3 pm,” an eyewitness tells us, adding, “And Kim and Kris are definitely staying here as well.”

We reported on Aug. 18 that Kim and Kris will be married at venture capitalist, Frank Caufield‘s estate, ‘Sotto Il Monte’ meaning “Beneath the Mountain. Sources tell us that the estate has four entrances with heavy security at each one and there are no holes in the perimeter of the 10.9 acre estate for party crashers to sneak in.

Sotto Il Monte is the perfect place for Kim’s fairytale wedding. Equipped with panoramic views of the Santa Ynez Mountains, a main villa, pool and pool house, gymnasium, indoor solarium pool, tennis court, guest house, staff quarters, and greenhouse.

While Kris and Kim are staying at the estate, their guests are beginning to arrive at the Four Seasons in Santa Barbara, Calif. “No one is allowed in the hotel right now, unless they have a room or a specific reservation,” our source dishes. “There are no paparazzi around, but there are camera crews for Kim’s shows ready to fill arrivals.”

There’s no question it’s going to be the wedding of the year!

Aimee Curran, with reporting by Sandra Clark