Ballerwives.com has learned that the Kardashian clan is about to have a new addition to their family.

Last night, Kanye West announced that his girlfriend Kim Kardashian is pregnant with his child.

VIA ABCNEWS.com

West, 35, broke the news Sunday night during a concert in Atlantic City. West told more than 5,000 concertgoers to congratulate his “baby mom” and that this was the “most amazing thing.”

“KIMYE!,” sister Khloe Kardashian Odom tweeted. “Keeping secrets is hard with so many family members! Especially when you are so freaking excited!!!!! LOVE is everything!!!,” she added.

Soon after the tweet, the hashtag #Kimye took off on Twitter and was trending worldwide. Most of the Kardashian clan tweeted their excitement via Twitter.

Kardashian’s mother, Kris Jenner, expressed her excitement on Twitter, tweeting, “Oh BABY BABY BABY!!”

Kardashian, 32, filed for divorce from NBA star Kris Humphries October 2011 after 72 days of marriage. The divorce is not yet finalized.

West, 35, and Kardashian began dating in April.

Kardashian sources confirm Kim is 12 weeks pregnant.

Congratulations to Kim and Kanye!