Rose Leslie and Kit Harrington attending the Olivier Awards 2016

Kit Harington and Rose Leslie have become first-time parents.

The actors - who are both known for their roles in Game of Thrones - are proud parents to a little boy their rep confirmed to The Sun on Tuesday.

The pair are said to "very, very happy" with their new arrival. The HBO stars are yet to announce the name they have chosen for the tot.

In September last year, the smitten couple announced were expecting their first child.

The lovely news was confirmed when Rose, 33, posed for a photoshoot with Make magazine.

In the stunning black and white photo, she stood side on to reveal her growing baby bump.

Kit, also 33, married Rose in her native Scotland in June 2019.

Their Game of Thrones co-stars, including Sophie Turner (Sansa Stark) and Maisie Williams (Arya Stark), were in attendance.

The show brought Kit and Rosie together as they played lovers Jon Snow and Ygritte.

 Kit and Rose wed in 2019 (Image: GC Images)

Rumours of a romance between the pair first started in 2012, but they're thought to have split up briefly.

They got back together in 2016 and Kit popped the question the following year.

Kit and Rose took the traditional step of announcing their engagement in The Times.

The announcement said: "The engagement is announced between Kit, younger son of David and Deborah Harington of Worcestershire, and Rose, middle daughter of Sebastian and Candy Leslie of Aberdeenshire."

Since leaving Game of Thrones Kit has gone on to star in How to Train Your Dragon: The Hidden World and Eternals.

Meanwhile, Rose will star in the upcoming film Death on the Nile.