Los Angeles, Dec 31 (IANS): If singer Kanye West is to be believed, his socialite girlfriend Kim Kardashian is expecting their first child.

The rapper revealed the news during a concert in Atlantic city, New Jersey when he said: "Stop the music and make noise for my baby mama."

He was referring to Kim, who was in the crowd.

Even though Kim, 32, is yet to confirm the news herself, the Kardashian family has let the news out and they are all very excited, reports contactmusic.com.

Kim's sister Khloe wrote on Twitter: "Kimye! Keeping secrets is hard with so many family members! Especially when you are so freaking excited! Love is everything."

Kim's second sister Kourtney and mother Kris Jenner also expressed their joy on the micro-blogging site.

"Been wanting to shout from the rooftops with joy and now I can! Another angel to welcome to our family. Overwhelmed with excitement," Kourtney wrote.

"I'm a happy girl! Wowza! Oh Baby Baby Baby," wrote Kim's mother.