Beyonce has given birth to a daughter.

E! reports the baby arrived via scheduled C-section, and that Jay-Z is telling friends her name is Blue Ivy Carter.

This is the couple’s first child.

To keep their privacy, the hospital’s windows and surveillance cameras were blacked out and employees of the hospital reportedly had to turn in their cell phones before starting their shifts.

As news spread about the couple’s new addition to their family, fans tweeted their congratulations including the couple’s closest celebrity friends, who couldn’t wait to share the good news.

“Welcome to the world princess Carter!” singer and pal of the couple Rihanna tweeted. “Love Aunty Rih.”

Russell Simmons also had good wishes for the new parents: “congrats to my good friends Beyonce and Jay-Z,” he tweeted.

What do you think of the name Blue Ivy?