Prince Harry and Meghan Markle have announced that they are expecting their second child.

A spokesperson for the Duke and Duchess of Sussex confirmed the news on Sunday, February 14.

"We can confirm that Archie is going to be a big brother," the rep told PEOPLE. "Duke and Duchess of Sussex are overjoyed to be expecting their second child."

Meghan 39 and Harry, 36 already share one son together – Archie, who turns two later this year in May.

Prince Harry and Meghan Markle [[imagecaption|| Credit: PA Imges]]

The news means Archie, who is seventh in line to the throne, will have a baby brother or sister.

Yesterday, Meghan and Harry's friend, a photographer by the name of Misan Harriman, posted a black-and-white photo of the expectant parents on social media in celebration of the news.

In the sweet snap, Harry is seen sitting on the grass, with Meghan's head in his lap. Her hand is seen placed over an emerging baby bump, peering through her maxi-dress.

Harriman captioned the photo: "Meg, I was there at your wedding to witness this love story begin, and my friend, I am honoured to capture it grow. Congratulations to The Duke and Duchess of Sussex on this joyous news!"

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As the news was shared on Valentine's Day, many have shared parallels between this announcement and Valentine's Day in 1984 when Harry's late mother Princess Diana revealed she was pregnant with him.

Since Queen Elizabeth II's granddaughter, Zara Phillips is also pregnant, Meghan and Harry's baby will be the queen's 10th or 11th great-grandchild.

The joyous news comes after Meghan revealed in November that she had suffered a miscarriage last summer.

In an opinion piece for the New York Times, she made the brave decision to open up about her loss.

She wrote: "I lay in a hospital bed, holding my husband's hand. I felt the clamminess of his palm and kissed his knuckles, wet from both our tears. Staring at the cold white walls, my eyes glazed over. I tried to imagine how we'd heal."

She added: "Losing a child means carrying an almost unbearable grief, experienced by many but talked about by few."

'Overjoyed' Prince Harry and Meghan Markle confirm baby number two: 'Archie is going to be a big brother!'