Kim Kardashian is pregnant. On stage last night (Sunday) in Atlantic City, Kayne West made the official announcement. He told the crowd that becoming a father is the "most amazing thing." Then asked "Can we make some noise for my baby mama right quick?"

Twitter went wild with the news. Kim's sister Kourtney Tweeted (quote) "Been wanting to shout from the rooftops with joy and now I can! Another angel to welcome to our family. Overwhelmed with excitement!" Plus, her mother Kris Tweeted "Oh BABY BABY BABY!!"

Sources tell TMZ that Kardashian is about 3-months along, meaning she's due mid-summer of 2013.