Game of Thrones star Thor Bjornsson announces stillbirth of baby daughter

Bjornsson, who played The Mountain in the HBO series, already has one child with his wife Kelsey Henson.

The pair announced the news that they were expecting their second child just last month.

"Life is precious and I couldn’t be happier to announce that our family is growing bigger. Kelsey is 19 weeks pregnant with a healthy child who we cannot wait to meet," Bjornsson wrote at the time.

However, less than a month later, the actor took to Instagram once more to announce that their daughter had been stillborn.

"It is with great sorrow that we announce the birth of our daughter, Grace Morgan Hafthorsdottir born Nov 8th at 21 1/2 weeks gestation," he began.

"After a noticeable decrease in movement we found out her heart had stopped beating.

"Words cannot describe our pain of this loss or our happiness at being able to spend time with our daughter.

"She is absolutely beautiful, with blonde lashes and brows and a little smile for mom and dad. The love we feel for her is overwhelming.

"The grief we feel will be with us forever but so will the love. All of our hopes and dreams for her have been taken away from us but I know I will be with her again. Her spirit lives on through us and her siblings.

"We ask that you respect our privacy at this time as we grieve this unbearable loss. Thank you all for any kind words and support."