Celebrities react to the birth of Prince Harry and Meghan Markle's baby boy

Actors, television hosts, and leaders from around the world have sent their congratulations to Prince Harry and Meghan Markle after the birth of their first child.

The pair, who have been under an intense media spotlight recently as royal fans speculated over the baby's delivery date, welcomed the child on Monday.

News of the birth quickly swept the globe with celebrities and politicians sending their well wishes.

British Prime Minister Theresa May and the United Kingdom's Labour leader Jeremy Corbyn both sent their congratulations.

"Congratulations to the Duke and Duchess of Sussex on the arrival of their baby boy. Wishing you all the best at this happy time," a tweet from May said.

Meghan's former Suits co-star Patrick Adams warmly welcomed the baby.

"Just heard that the world just got heavier by 7 pounds and 3 ounces. Much love to him and his incredible parents," he said.

"Learned first hand 7 months ago how transformational becoming a parent is and couldn't be happier for Meghan and Harry as they begin this adventure."

He joked that their babies could be having play dates with "#playdatesoon".

The Suits Twitter account echoed Adams' thoughts with a tweet reading: "The entire Suits family sends their congratulations to the Duke and Duchess of Sussex, Prince Harry and Meghan Markle, on the birth of their baby boy!"

Former United States First Lady Michelle Obama wrote on Twitter: "Congratulations Meghan and Harry! Barack and I are so thrilled for both of you and can't wait to meet him.

On Monday, Prince Harry said that world would likely get to meet the newborn in two days time and no name had yet be chosen.

The baby is seventh in line to the throne, following the Prince of Wales, the Duke of Cambridge and his children, and then Prince Harry.

Newshub.