Beyonce and Jay-Z are proud new parents to a baby girl, Blue Ivy Carter.

The superstar singer gave birth at New York's Lenox Hill Hospital Saturday.

Beyonce and Jay-Z tied the knot in April 2008, and the new mom gleefully announced her pregnancy to the world at the MTV VMAs in August.

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There has been no official announcement of the baby diva's arrival but the couple's famous friends -- including Rihanna and Russell Simmons -- have been tweeting their congratulations.

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