Pregnant Game of Thrones star Lena Headey revealed her baby's gender Credit: Gregg DeGuire/WireImage

Queen Cersei will soon have one of each! Pregnant Game of Thrones actress Lena Headey has revealed that she's expecting a baby girl.

The HBO star, 41, confirmed the gender in a guest blog on Wednesday, May 20. In her excerpt titled "Daughter," she discussed her support for women's right in developing countries.

"I am having a baby girl in six weeks," she wrote. "My daughter will have freedom of choice. She will be free to dance, to sing, to be educated in the fields that spark her passion, to marry if she wants, to marry WHO she wants, to remain single, or to fall in love with another woman. She'll be able to wear what she wants, put on lipstick, and read books that spark debate and expand her mind."

She added: "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." (She also quietly said she was having a little girl in an April interview.)

The Gossip star announced in February that she's expecting her second child, but did not reveal the father's identity. She's already mom to 4-year-old son Wylie, whom she shares with ex-husband Peter Loughran.