Olivia Cooke says she had a hangover, broke a tooth before filming “House Of The Dragon”.

Olivia Cooke is sharing details of the boozy night she spent before her first day of filming HBO’s “Game of Thrones” prequel, “House of the Dragon.”

During an appearance on Tuesday on “Jimmy Kimmel Live,” the 28-year-old revealed that she had a huge hangover on her first day on set.

“I was very hangover,” he confessed to Kimmel ahead of his series debut this Sunday. “Really bad, actually. Really bad.”

Cooke, who plays Queen Alicent in the fantasy series, told him his drinking night was so bad he ended up chipping a tooth.

The actor said it all started when she appeared in British comedian Alan Carr’s Podcast “Life is a beach”. the night before, when the two indulged in one glass of wine too many.

“I never do, but there is this comedian in England that I love, Alan Carr, and he has a podcast. He invited me to participate in the podcast and I was very excited. “

Since her phone call on set wasn’t scheduled until 11:00 the next day, the star admitted she decided to bring “a bottle of wine just as a gesture” for Carr, but didn’t expect what would happen next.

“The podcast is over and we’re just chatting, chatting, chatting. She is telling me a lot of gossip. More wine, more wine, more wine, ”Cooke said.

After all the gossip and the wine, she was drunk before she did it.

“I don’t remember coming home. I remember tilting my head to put my hair on a pony, I fell out, “she said.

The next day, the actor woke up to find that he had chipped a tooth.

“Very slight cracking, but enough to be enlarged by the tongue. And you say, ‘What have I done?’ Nobody knew that on set, until now, “Cooke said.

Tuesday, Carr posted a video of himself reacting to his appearance on the Kimmel show.

“Doesn’t sound like me !!! I love you @livkatecooke don’t forget Lifes A Beach, ”he captioned the post along with a slew of emojis, including wine glasses and laughing faces.

Seemingly with no regrets, Cooke responded to his post, writing: “ahahahahahaha! it was worth it.”

“House of the Dragon” airs Sundays on HBO.