Emilia Clarke, 33, has become a Game of Thrones favourite playing Daenerys Targaryen since the show first launched in 2011.
Recalling her first memory of filming on the show, the British actress revealed she fell off a horse and cried in front of the whole cast and crew.
In a video shared on the Game of Thrones YouTube page, the star spilled: “My first day on set, oh my God I fell off a f*****g horse!”
Emilia continued: “This is my first job, this was the first thing I ever did and they stuck me on a horse!”
“In a bamboo field in Belfast, it was raining and I was falling off the horse trying to act still.”
Emilia explained she tried her hardest to remain on the horse whilst filming with the Dothraki, but it didn’t work out.
The star said: “I remember hanging on for dear life and I just remember shouting please stop filming!”
Repeating what she said to herself at the time, Emilia added: “I’m like okay, everything’s going to be fine.”
However, it all became too much for Emilia as she revealed she burst out crying.
Laughing at the memory, the beauty divulged: “I turn around and there’s the whole crew and i just cried!”
“And that was my first day on Game of Thrones,” she said. “That was it.”
Emilia also revealed she believes she shared many similarities with the Mother of Dragons, having played the strong character for almost a decade.
Talking how her character’s actions have affected her, she went on: “I have had to stand up and be Daenerys in all of these moments.
“I’ve had to stand on a rock and speak to a lot of people in a crazy language.”
The clip then showed an hilarious moment where Emilia mucked up her lines whilst riding a mechanical green dragon.
After speaking some Valyrian, Emilia forgot what she was saying and shouted: “F**k!”
She continued to joke: “F****d up all of my Dothraki!”
Game of Thrones finally returned on Sunday with the premiere of season eight.
Daenerys could be seen arriving into Winterfell with Jon Snow (played by Kit Harrington) along with her armies, the Unsullied and Dothraki, plus her two remaining dragons.
Game of Thrones season eight, episode two airs Sunday on HBO and is simulcast at 2am on Monday in the UK.