The royal wait is over.

Royal officials announced Monday that Kate Middleton and Prince William are expecting a baby.

“Their Royal Highnesses The Duke and Duchess of Cambridge are very pleased to announce that The Duchess of Cambridge is expecting a baby,” the royals announced on their web page.

“The Queen, The Duke of Edinburgh, The Prince of Wales, The Duchess of Cornwall and Prince Harry and members of both families are delighted with the news.”

Middleton has been admitted to the King Edward VII Hosptial in London with hyperemesis gravidarum, an acute morning sickness which requires supplementary hydration and nutrients, the palace said.

She is expected to stay there for several days.

The couple’s website crashed shortly after the announcement went live.

Rumours of the impending Royal pregnancy had become part of daily British life since the couple tied the knot in April 2011.

Middleton and her husband are both 30 and started dating in 2002. Numerous sources in British media have breathlessly described their desire to be parents.

A school friend of Middleton’s predicted the royals would announce the pregnancy in December and Prince Williams no doubt added to the speculation when he accepted a custom onesie reading “Daddy’s Little Co-Pilot” as a present.

“I’ll keep that,” Prince William said of the gift.

The Royals did not announce how far along Middleton is in her pregnancy.

Middleton was recently photographed playing field hockey and showed no signs of a baby bump.

While the couple waited a mere year and a half into their marriage to announce the pregnancy, they are actually quite tardy by royal standards.

William was born 11 months after Princess Diana and Prince Charles were married and Charles was born six days before Queen Elizabeth’s first-year wedding anniversary with Prince Phillip.