BEYONCÉ gave birth to a baby girl in New York on Saturday. Her name is Blue Ivy Carter. This is the first child for Beyoncé and husband JAY-Z, whose real name is Shawn Carter.


--Ivy was delivered by C-section. Here are some congratulatory Tweets . . .

--Beyoncé's sister SOLANGE KNOWLES: "The most beautiful girl in the world."

--RIHANNA: "Welcome to the world princess Carter! Love Aunty Rih."

--GWYNETH PALTROW: "Welcome to the world Blue! We love you already."

--DIDDY: "Congrats to jay and B. God Bless. And many more!"

--SNOOKI: "Beyoncé congrats on your baby gurl mama!!!! So happy for you, you deserve it sexpot."

--KOURTNEY KARDASHIAN: "Congratulations to Beyoncé, the 2nd Princess of Pop (behind Britney) for her new baby girl Ivy Blue!"

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