Sesame Street has reinvented itself in the digital age and continues to draw celebrities for really cute videos. While chances are that the audience for Game of Thrones is not the same as those watching Sesame Street, actress Lena Headey is the latest to star in a video for the long-running children’s show.

Headey appears in a ‘Word of the Day' segment with the character Murray and the word for today was ‘relax.’ It turns out that Murray is a very, very excited Muppet who can’t quite calm down. It’s up to Headey, who plays the always-in-control Cersei Lannister on GoT, to help Murray learn to take a deep breath and relax. Now, if Cersei could learn to do that, the Lannister clan might not be so nasty.

In an interview with EW, Headey revealed that she was actually nervous on the set and couldn’t relax.

“Lena was nervous,” puppeteer and director Joey Mazzarino added. “She told me that. And I was like, ‘You’re Cersei, man! You can’t be nervous!’ But she was just super cool with the muppets. I’m a big Game of Thrones fan, so I was super pumped to do it.”

It turns out that Headey isn’t the first GoT star to do Sesame Street. Peter Dinklage, who plays her brother Tyrion on the show, sang about the game Simon Says.

There have also been other stars who have taken part in Sesame Street videos recently. Earlier this month, John Cho explained the meaning of sturdy.

image: YouTube