The world waited with bated breath today when Prince William and Kate Middleton headed to the hospital to welcome their child - and Hollywood did too.

Live Updates: Prince William and Kate Middleton Welcome a Son!

After the news broke this afternoon that the royal baby is a boy, celebrities weighed in on Twitter about the new heir.

Congrats to William and Kate. Your son shares the same birthday as I do.

— Albert Brooks (@AlbertBrooks) July 22, 2013

Big congrats to prince William and Kate Middleton! A boy! What a blessing'

— ali landry (@alilandry) July 22, 2013

Royal baby boy!

— NeNe Leakes (@NeNeLeakes) July 22, 2013

It's a boy! Huzzah Kate and Wills! #RoyalBabyWatch

— Patricia Heaton (@PatriciaHeaton) July 22, 2013

Congratulations to Kate & William on the birth of their baby boy! So relieved that his name won't include the words Ivy or Apple.

— Joan Rivers (@Joan_Rivers) July 22, 2013

It's a boy! Perhaps Anderson? Or Cooper? @andersoncooper @DevnaShukla

— Kelly Ripa (@KellyRipa) July 22, 2013

It's a boy!!! Special times ahead for Kate and William. Xxxx

— Emma Bunton (@EmmaBunton) July 22, 2013

Welcome to the future king! Congratulations William & Kate. Much Love, Queen Latifah #QLShow pic.twitter.com/b0d33ikWZv

— Queen Latifah (@IAMQUEENLATIFAH) July 22, 2013

Congrats to William and Kate on the birth of their baby BOY! #RoyalBaby

— Louise Roe (@louiseroe) July 22, 2013

Congratulations to William & Kate on the arrival of a Prince. #RoyalBaby

— Crystal Hefner (@crystalhefner) July 22, 2013

Welcome royal baby boy!!!

— Melissa Gilbert (@MelissaEGilbert) July 22, 2013

I know it's a boy, I'm watching it on the dang web cam. It's gurgling.

— josh groban (@joshgroban) July 22, 2013

Named Christopher, no doubt. *cough cough* RT @USATODAY: #BREAKING: Kate Middleton gives birth to a boy http://t.co/dPPsCToAGN

— Christopher Gorham (@ChrisGorham) July 22, 2013

It's a boy! So happy for my cousin Kate and the future King of England!

— Ellen DeGeneres (@TheEllenShow) July 22, 2013

Congratulations to the Royal Family on their new baby boy!

— Bethenny Frankel (@Bethenny) July 22, 2013

EPIC!!!! a new prince was born. its like real life Game of Thrones #royalbaby

— Jack Osbourne (@MrJackO) July 22, 2013

And in happier news the new baby prince was born! So happy for Will & Kate! Xx

— Teresa Giudice (@Teresa_Giudice) July 22, 2013

A lady had a baby.

— Joel McHale (@joelmchale) July 22, 2013

Congrats 2 #RoyalFamily!I thought boy by the way she carried!Princess Diana is watching from above,smiling down I bet!beautiful moment

— Debi Mazar (@debimazar) July 22, 2013

BABY BOY good thing I didn't tweet my prediction of ginger girl.

— christine teigen (@chrissyteigen) July 22, 2013

It's a BOY, Congratulations to Prince William and Kate Middleton, This is SO GOOD. #RoyalBabyBoy #RoyalFamily

— Sophia Grace (@PrincessSGB) July 22, 2013

So pleased to hear that William and Kate had a baby boy. Long live the future king. MBB

— William Shatner (@WilliamShatner) July 22, 2013