Beyoncé Gives Birth to Baby Girl: Blue Ivy!

Congrats to Jay-Z and Beyoncé on their new addition

Congrats are in order for Jay-Z and Beyonce!

E! Online reports that it's a girl for the hip hop couple and her name is Blue Ivy Carter, born on Saturday night.

Although initial reports said the baby's name was Ivy Blue, best friend Gwyneth Paltrow confirmed via Twitter that indeed, it's Blue Ivy Carter for the most anticipated baby in music.

Reps for the couple have yet to confirm. Still, Beyonce's sister Solange also tweeted, "The most beautiful girl in the world."

Celebrities including Rihanna also tweeted their congratulations saying, "Welcome to the world princess Carter! Love Aunty Rih." Also, music mogul and longtime friend of the couple Russell Simmons tweeted, "congrats to my good friends Beyonce and Jay-Z."

Blue Ivy marks the first child for the couple, who was married in April 2008.