British Prime Minister Boris Johnson, 55, and Carrie Symonds, 31, are reportedly engaged and expecting a baby

British Prime Minister Boris Johnson, 55, and girlfriend Carrie Symonds, 31, are expecting a child and are engaged to be married, the couple reportedly revealed on Saturday.

"The prime minister and Miss Symonds are very pleased to announce their engagement and that they are expecting a baby in the early summer," the statement read, according to a Reuters story published in the New York Times. CNN also reported that Downing Street, where the U.K. government is situated, confirmed the news and per ABC News, no wedding date has yet been announced.

The New York Times reports that Johnson will be the first British prime minister to marry in office for 250 years. He will also be the first Prime Minister since Tony Blair to have a child while living on 10 Downing Street, the Times continued. Former prime minister Blair and his wife Cherie welcomed a son named Leo in 2000.

Several British publications have reported that Symonds detailed the big news via her private Instagram page.

“I wouldn't normally post this kind of thing on here but I wanted my friends to find out from me," Symonds reportedly wrote on her private Instagram, per the BBC. "Many of you already know but for my friends that still don't, we got engaged at the end of last year... and we've got a baby hatching early summer. Feel incredibly blessed."

It will be the first child for Symonds, who previously worked as a communications chief for Johnson’s Conservative Party. Johnson, who was previously married twice, has four children from his second marriage to Marina Wheeler, according to the Washington Post.

Yahoo Entertainment reached out to representatives for Johnson but did not immediately hear back in time for publication.

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