It turns out, when former Destiny's Child member, Kelly Rowland, let it slip that Beyonce was expecting a girl, that was the truth.  Little Blue Ivy Carter was born by c-section Saturday, January 7th.

It was initially reported that the name was Ivy Blue, but E! Online reports that it's Blue Ivy.

Either way, congrats to Beyonce and Jay Z!  Stars including Rihanna and Russell Simmons are already starting to tweet their warm wishes.