Lena Headey has given birth to her second child. The "Game of Thrones" star announced the arrival of her daughter via Twitter on Friday.

"Hello peeps. All good. Just fallen in unconditional heartbreaking divine love for the second time," Headey tweeted.

The new baby girl joins her older brother, 5-year-old Wylie, whose father is the actress' ex-husband Peter Loughran. Headey has not revealed the father of her daughter.

The 41-year-old actress confirmed her pregnancy in February. She then revealed in May that she was having a little girl in a guest blog post for Plan International USA, according to People. She asked for donations to the Because I Am a Girl Safe Future project, which supports young women in Egypt and gives them the same rights and privileges of people in more developed nations.

"I am having a baby girl in six weeks. You have all been so lovely in your message to me, and I thank you for that," Headey wrote.

She continued, "She will be loved, protected, respected, and celebrated. All these things that should be, and will be, basic human rights, are a promise to my daughter. My humble request is that you give what you can and maybe - just maybe - we can bring about the change we all wish to see."

Headey will next star in "Pride and Prejudice and Zombies," out on Feb. 5, 2016. She will return for the sixth season of "Game of Thrones" in April 2016 on HBO.