Kim Kardashian is engaged!

May 25, 2011 at 9:48 a.m. ET

Kim Kardashian is getting married to her basketball player boyfriend, Kris Humphries. After a six-month courtship, the NBA forward popped the question.

kim kardashian weddingKim Kardashian has spilled the beans that she's engaged to be married to her beau Kris Humphries. As for the proposal, it took the Keeping Up with the Kardashians star totally by surprise. She arrived home to find her boyfriend on bended knee and "Will you marry me?" spelled out in red rose petals on her bed.

"I didn't expect this at all," Kardashian, 30, said of the dramatic May 18th proposal after a six-month courtship. "I was in such shock. I never thought it would happen at home, and I never thought now."

"I just knew I wanted it to be big," Humphries, 26, a power forward for the New Jersey Nets, said of the rock he put on Kardashian's finger. The engagement ring is a massive, custom-made 20.5-carat sparkler created by Lorraine Schwartz.

Afterward, the two celebrated their upcoming nuptials with the Kardashian clan, a party that Humphries planned with the help of Kim's mother, Kris Jenner.

"[Humphries] really didn't want a big celebration, but he had jokingly told my mom he'd be fine if there were mini-horses there," Kardashian revealed. "Later that night at the party, my mom brought out two mini-horses, covered in glitter, for us! It was hysterical!"

The marriage will be Kardashian's second. She was married to music producer Damon Thomas in 2000, and they divorced in 2004. Since then, she's dated R&B singer Ray J, with whom she co-starred in a celebrity sex tape, New Orleans Saints halfback Reggie Bush, Halle Berry's ex, model Gabriel Aubry, and Dallas Cowboys wide receiver Miles Austin.

"I can't believe I was able to keep this a secret but now I can scream all I want about it! Kim is engaged!!!!!!!!!!!!!!!!!!!! OMG!!!!!!!!!!" Kim's sister Khloe tweeted after news of the engagement went public.

As for the mother of the bride-to-be, she hopes she'll have more time to plan this wedding than Khloe's rushed wedding to Los Angeles Lakers forward Lamar Odom. "PALEEEEEZE GIVE ME MORE THAN 9 DAYS!!!!!!!!!!" Jenner tweeted. "I AM BEGGING..."

No word yet on the details of the upcoming nuptials, but we're thinking this wedding's going to be totally over-the-top.