The reality star started having contractions Friday night and went into labor in the early hours of Saturday. The delivery of Kimye's daughter was a little ahead of schedule, as she was reportedly due in July.
On Monday, Beyonce wrote a post on her Tumblr offering up congratulations to Kardashian and West. "Congratulations Kim & Kanye," Beyonce wrote with a photo of the couple. "Enjoy this beautiful moment together." Like Kardashian, Beyonce is a new mother. She gave birth to her daughter Blue Ivy in January 2012.
Kardashian recently announced the sex of her baby on an episode of Keeping Up with the Kardashians. "I'm so excited we're having a girl," she said. "Who doesn't want a girl? I think they are the best. I know that'sreally what Kanye has always wanted."