Update!

Kate Middleton Pregnant: Obamas, Prime Minister, Kim Kardashian, More React to Prince William's Royal Baby News

Celebs take to Twitter to offer congratulations on duke and duchess's impending birth

By Gina Serpe Dec 03, 2012 6:40 PMTags
Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, Kate MiddletonRui Vieira - WPA Pool/Getty Images

Kate Middleton is pregnant. Prince William has an heir (third in line to the throne, as it happens). Yes, a royal baby is on the way. Give or take six months.

Oh, Christmas came early, all right.

And if you think the world's media is going overboard with their enthusiasm for this momentous babymaking occasion, well, they've got nothing on Hollywood, because almost as soon as St. James's Palace announced that the duke and duchess were expecting their first child, Twitter exploded with well-wishes for the happy couple. (The countdown is already on for a royal baby parody account to pop up, and...oh, phew. We knew you wouldn't let us down, Internet.)

And clearly Will and Kate have friends in high places, as President Barack Obama and first lady Michelle Obama were among the first to comment.

"We extend our congratulations to the Duke and Duchess of Cambridge on the welcome news out of London that they are having their first child," read the statement.

Herewith, a sampling of the other celebrity baby congratulations for Will and Kate:

Prime Minister David Cameron: I'm delighted by the news that the Duke and Duchess of Cambridge are expecting a baby. They will make wonderful parents.

Kim Kardashian: Aww so cute! Congrats!!!

Khloé Kardashian Odom: Congratulations to the Duke and Duchess of Cambridge!! A royal baby!!! :) awwww so sweet

Brooklyn Decker: A ROYAL BABY...I hope Royal Baby and Blue Ivy Carter become best friends.

Ivanka Trump: A royal baby is on the way for #KateMiddleton and Prince William! lovely! #royalbaby

Damon Lindelof: "KATE MIDDLETON'S UNBORN CHILD SHALL SAVE US FROM THE FISCAL CLIFF!!!" — My Cardboard Sign Today

Piers Morgan: Congratulations to every magazine editor for calling Kate Middleton's pregnancy - especially those who did covers on it 11 months ago.

Josh Malina: I hope it gets Kate's hair.

Estelle: Beautiful. Congrats will and Kate.

Cheryl Cole: I'm sooooooo excited that we're having a royal baby!!!! Congratulations to Kate and Wills!!!!!!

Ryan Seacrest: Will and Kate +1.

(Originally published on Dec. 3, 2012, at 9:30 a.m. PT)