HOLLYWOOD, Calif. — Kim Kardashian is walking on cloud nine.

The 28-year-old reality star is rejoicing after her younger sister Khloe married hoops star Lamar Odom Sunday evening in Beverly Hills, Calif.

"Tonight was one of the best nights of my life!" she wrote on her Twitter page after the ceremony, which took place at the home of music mogul Irving Azoff, a friend of the Kardashian family.

Approximately 250 guests saw the first Kardashian sibling get married, including Ryan Seacrest, Kelly Osbourne, Kobe Bryant, Chelsea Handler, Lara Spencer, Brittny Gastineau, Lala Vazquez and Babyface, who sang during the reception.

"Khloe & Lamar's wedding was a night to remember!" added Kim. "I love u both so much!"

Older sibling Kourtney also expressed excitement on Twitter just prior to the big event.

"So happy for my beautiful sister," she wrote.

Also see: Kim Kardashian Gallery