“Game of Thrones” stars Rose Leslie and Kit Harington are about to discover the true meaning of “Night’s Watch” — the two are expecting a baby.

After meeting on set of the hit HBO show and marrying in 2018, Leslie, 33, is pregnant with their first child.

She posed with her baby bump for a cover story in the new issue of the UK’s Make Magazine.

Fashion editor Ursula Lake broke the news by posting one of the images to her Instagram Saturday night.

“A very special all-woman team photographic shoot capturing Rose at this wonderful time as she prepares for motherhood for the first time!,” Lake wrote.

The couple is known for staying out of the spotlight. Neither maintains a presence on social media and both are rarely photographed in public.

They were last seen in public together smiling and embracing each other during the Golden Globes in January.