Kate Middleton pregnant, world goes #royalbaby BONKERS! Olly Murs and Kim Kardashian join the fun

Since Kate Middleton's pregnancy was announced yesterday, the world just can't stop talking about the news.

Celebs celebrate the royal baby news! - 04 DecemberYes, Wills and Kate are having a baby and celebrities are just as excited as everyone else it seems!

Kate and Wills are expecting and the world is VERY excited. Copyright: [wenn]

Well make that talking, celebrating, betting on, tweeting - there really is only one story around this morning and that is #royalbaby.

And celebs are going #royalbaby bonkers too, with Cheryl Cole, Rochelle Humes and even Olly Murs tweeting their congrats.

Thumbs up for the #royalbaby! Copyright: [wenn]

Olly wrote: "Cool #royalbaby that's amazing news!! Dam it how comes they never mentioned it on the XTRA Factor last week haha"

In case you are confused, the Xtra Factor have their very own Kate and Wills lookalikes!

And America was quick to join in and seems as chuffed as us lot are over this side of the pond.

US based celebs have tweeted their congratulations, including Kim Kardashian who wrote her well wishes on Twitter last night.

Kim is chuffed for Kate. Copyright: [rex]

Retweeting her sister Kourtney, Kim posted:

"Awww so cute! Congrats!!! RT @KhloeKardashian: Congratulations to the Duke and Duchess of Cambridge!! A royal baby!!! :) awwww so sweet"

Last night Prince William was snapped leaving the hospital last at night after spending the evening by his wife's side.

Wills was looking pensive and didn't stop to smile for the waiting snappers.

Wills looked pensive leaving the hospital last night. Copyright:[Splash]

He is expected to return this morning and Kate's sister Pippa Middleton is also believed to be paying a visit to the hospital today.

Other reports have started questioning whether Kate could be expecting twins and perhaps that is why she is so poorly.

Which got us thinking...

How would they decide which one takes on the throne? After all, this baby definitely will be King or Queen of England one day.

No pressure then.

Meanwhile, Kate has pulled out of all her upcoming Royal engagements and is expected to rest after she leaves hospital.

The Duchess was admitted to hospital yesterday suffering morning sickness.