*UPDATE* We have learned from Gwyneth Paltrow (one of Beyonce and Jay Z's closest friends) that their baby's name is actually Blue Ivy Carter, not Ivy Blue Carter as earlier reports suggested! See her tweets and the congrats from other celebs after the jump!
Twitter is still a blaze as the congratulatory tweets pour in..even from Rihanna..who calls the new baby..Princess Carter!
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