KIM & KANYE welcome a baby girl

Kim Kardashian has given birth to a daughter at Cedars-Sinai Medical Center in West Hollywood, Calif., confirms E!, which airs her reality shows.

According to the entertainment network, papa Kanye West was by her side for the delivery.

So far, Kardashian is being coy and hasn't Tweeted about the birth; her publicist Jill Fritzo is not responding to repeated requests for comment. She and West have not revealed the name, but according to E!, Kardashian told friends it will begin with a K.

Of course, this being the age of Twitter, congrats are rolling in:

Russell Simmons: "There is no greater gift in life than a child's laughter! congrats to Kim And Kanye..."

Nas: "Congrats to Kanye 4 the birth of his daughter today too! To my bros w/ daughters!!"

Bethenny Frankel: "All kidding aside, congrats @kimkardashian on your baby girl. It's the most beautiful, best thing that could happen to you. Girls rule."

Us Weekly cites an unnamed hospital source as saying the reality star delivered "five weeks early. Kim got sick last night and had the baby early."

The source added, "They're all doing great and amazing!"

TMZ reports that Kardashian had a natural birth after beginning contractions on Friday and going into full labor on Saturday.

It is the first child for the reality TV star and her boyfriend, West.

For those who have somehow been immune to the ongoing coverage of the Kardashian offspring, West, 36, first announced Kardashian's pregnancy in December, during a concert in Atlantic City. "Stop the music and make noise for my baby mama … now you having my baby!" he shouted to the audience, which included Kardashian.

Since then, Kardashian, 32, has been a near-daily presence on blogs and websites, and in magazines, which have chronicled her unusual choices in maternity wear (consisting mostly of black and white pieces), her growing girth, and how much time she's been spending with West (not much). Their most high-profile public outing: May's Met Ball in New York City.

Kardashian told USA TODAY in March that she understood the interest in her. "I get that my life is very public and I live my life on a reality show. It gets a little tedious sometimes when I'm asked a bunch of questions that are so silly," she said.

Give this to Kardashian: she doesn't hold much back when she's on air. On the season premiere of her reality show “Keeping Up with the Kardashians,” she revealed that she's having a girl. "I'm so excited we're having a girl. Who doesn't want a girl? They are the best, and I know that's really what Kanye has always wanted. He wanted a little girl," she said.

Of course, whether the child will be on the show remains up for debate. "I think, as of now, that's just, you know, a decision that Kanye and I made. … From the start, we're just gonna try to keep it as private as possible," she told Jimmy Kimmel in January.

In reality, her pregnancy has been chronicled on the show. On the season finale of “Kourtney and Kim take Miami,” she broke the news that she was having a baby. She had an opulent baby shower, with mom Kris Kenner, sisters Kourtney and Khloe, and West in attendance, which was filmed for the show.

West, whose public demeanor is surly at the best of times, was focused on his sixth album, Yeezus , which he was busy recording in Paris while Kardashian was pregnant and filming. The album, out June 18, already leaked online.

Meanwhile, Kardashian is, finally, a single lady. After a long battle that outlasted her 72-day marriage, Kardashian finally divorced basketball player Kris Humphries in April.

"I've said some things that I completely am, like, a hypocrite about now," Kardashian told Ryan Seacrest, one of the producers of her show, in an E! news special. "I would say things about Kourtney like, 'You cannot have a baby without being married!' "