Montecito, California (CNN) -- Reality TV star Kim Kardashian gushed hours ahead of her wedding Saturday with pro basketball player Kris Humphries, writing on her website, "I can't believe it's finally here!"
The two, who got engaged in May, are set to tie the knot on a private 11-acre, $29 million estate in Montecito, California. They had been dating for about six months prior to their engagement. Humphries plays for the NBA's New Jersey Nets.
Kardashian, star of the E! network's "Keeping up with the Kardashians," is a staple in popular news magazines and in social media. She has more than 9 million followers on Twitter, among the most of any celebrity except for Lady Gaga, Justin Bieber and Katy Perry.
Two of Kardashian's sisters -- Khloe and Kourtney, both fellow reality television stars and also partners in retail and other projects -- took to the social media hub to echo the bride-to-be in expressing their excitement.
"My sisters getting married today!!!" Khloe Kardashian tweeted, later linking to a web posting dedicated to "Kimmie."
"Since we were little girls, you have been dreaming about your perfect, fairytale wedding, and today we all get to watch as those dreams become your perfect reality," Khloe Kardashian wrote. "Watching you, the ultimate believer in true love, fall head over heels for your prince charming has been so special for everyone who knows and loves you. You deserve everything wonderful in the world, and I have no doubt that you will get exactly that after you walk down the aisle tonight."
Kris Jenner, the mother of the bride, wrote on Twitter that she "wanted to sleep in but too excited." She thanked the family's fans for their support.
"I want to tell all of my twitterdolls how much I appreciate all of your beautiful well wishes for @kimkardashian wedding! God is so good!"
Khloe Kardashian's own nuptials with Los Angeles Laker Lamar Odom aired as a special on E!, pulling in 3.2 million viewers.
Kim and Kris' wedding festivities are also set to be broadcast as part of a planned four-hour, two-part special in October.
People magazine nabbed the exclusive rights to the wedding photographs for an unknown amount, though figures ranging between $300,000 and $1 million have been reported.
CNN's Kareen Wynter contributed to this report.