If you hear someone near you giving their name as Ingrid Jackson, best have a quick glance around to check they're not really Beyonce.

Yes, that was the name she checked into Lenox Hill Hospital under on Friday night, to give birth to her first child with Jay-Z, via caesarean section.

Baby Bey-Z is actually named Blue Ivy Carter, confirmed by the couple's pal Gwyneth Paltrow on Twitter after everyone started reporting the name as Ivy Blue…

Whether the first name is a tribute to Lee Ryan and co. or not remains to be seen, but US Weekly report that the couple reportedly chose 'Ivy' as it's 4 in Roman numerals.

Beyonce's a bit obsessed with the number 4 - it's her latest album's name… plus Jay-Z was born Sept 4, Beyonce was born Dec 4, they were married on April 4, 2008.

I'm just looking forward to seeing how Taylor Swift works her obsession with the number 13 into her firstborn's name…

Beyonce and Jay-Z holed up in Lenox Hill Hospital from Friday night, before she gave birth on Sunday - and fellow patients might have had some idea that a superstar was close by.

The New York Daily News reports that bodyguards kept sweeping the place for journalists, and one source told them that he was barred from visiting one particular floor - which was apparently mostly reserved for their us at the cost of a cool £1million.

Should baby Blue need to borrow a couple of quid in the upcoming years, she has a whole lot of celebs willing to help her out - here's just a selection of those who welcomed her into the world via Twitter:

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

Diddy: "Congrats to Jay and B! God Bless. And many more!"

Solange Knowles: "The most beautiful girl in the world."

Gwyneth Paltrow: "Welcome to the world Blue! We love you already!"

All of us at Handbag Towers are sending our congrats to Bey and Jay-Z! And we're already very jealous of Blue for a multitude of reasons…

What do you think of Beyonce and Jay-Z's choice of baby name - super cute, or super ridiculous? Let us know below, on our Facebook page or via Twitter @handbagcom.