Beyonce and Jay Z have a baby girl! 0

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Beyonce and Jay Z’s wonderchild was delivered on Saturday via C-section. The famous pair welcomed newborn Blue Ivy Carter to the world at Lenox Hill Hospital in New York, according to E! News.

The songstress’ sister Solange Knowles told the world on Twitter that Blue Ivy is “The most beautiful girl in the world.”  Solange was one of many celebs to congratulate the pair and welcome the new addition to he family.  Rihanna, Gwyneth Paltrow, Russell Simmons, Diddy and Young Jeezy also tweeted their congrats.

“Congratulations to Jay-Z & Beyonce on baby Ivy Blue being born,” Young Jeezy tweeted. (NOTE:  Some news outlets have reported the name to be Ivy Blue, according to MTV.com).