The Duke and Duchess of Cambridge are expecting a spring baby!

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The royal household announced Kate Middleton's due date on Monday writing, the couple is "delighted to confirm they are expecting a baby in April 2015."

The announcement also gave an update on Middleton's severe morning sickness, which she also experienced during her first pregnancy with Prince George.

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"The Duchess of Cambridge continues to be affected by Hyperemisis Gravidarum, but her condition is steadily improving," the royal announcement said.

The 32-year-old is feeling well enough to join Prince William in welcoming Singapore's President Tony Tan and his wife to the U.K. on Tuesday at the Royal Garden Hotel, London as part of his four-day visit. They are then expected to travel with the couple to the Horse Guards Parade for a ceremony.

The Duchess will also make an appearance at the Wildlife Photographer of The Year 2014 Awards Ceremony at the Natural History Museum that same day.

Tuesday will mark Middleton's first public appearances since her second pregnancy was announced in September. The baby will be fourth in line to the throne.

"The Duke and Duchess of Cambridge are very pleased to announce that The Duchess of Cambridge is expecting their second child," the royal Twitter account confirmed on Sept. 8. "The Queen and members of both families are delighted with the news that Their Royal Highnesses are expecting their second child."

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Kate Middleton, Prince William