Beyonce Knowles gave birth Saturday night to her first child with Jay-Z. According to reports, the baby is a girl named Ivy Blue Carter. Both mother and daughter are reportedly healthy. Beyonce announced the pregnancy August 28th during the MTV Music Awards, about two months after her latest album, "4" arrived in stores. According to Nielsen SoundScan figures, the labum has reached the platinum mark, kaving sold 1.04 million copies.