Lady Gaga has said appearing in the new season of American Horror Story was an “exhilarating” experience.

The singer raved about her time on American Horror Story: Hotel as she arrived for the star-studded premiere of the FX show in the US.

With fiance Taylor Kinney as her date, Gaga said playing Countess Elizabeth, who runs the Hotel Cortez, made her feel alive.

Lady Gaga and Taylor Kinney
Lady Gaga with her fiance Taylor Kinney (John Salangsang/Invision)

“It’s been so fun,” said the pop star, who arrived fashionably late in a red gown with a thigh-high slit.

“Everybody on this cast has been really open and available to me in a very honest way, so I’m able to be myself in a way I feel like I haven’t been in a really long time, so they are just making me feel so alive,” Lady Gaga said.

She called the fifth instalment of the Emmy-winning show a masterpiece and praised executive producer and co-creator Ryan Murphy.

Ryan Murphy and Lady Gaga
Ryan Murphy and Lady Gaga (John Salangsang/Invision)

“I’m just really happy to be a part of it. I like being a part of someone else’s vision, it’s really exhilarating,” she added.

Gaga endeared herself to the cast. Co-star Matt Bomer said some of her fellow actors called her by her given first name (her real name is Stefani Germanotta).

“It sort of takes the myths and all the preconceptions of Lady Gaga out of the equation so we can just relate to each other like human beings and actors in a scene,” Matt explained.

“She’s so approachable that she totally just was there for us … by the time the cameras were rolling and we were in a scene together, we weren’t thinking about the fact that you were doing a scene with Lady Gaga.”

Matt Bomer
Matt Bomer (John Salangsang/Invision)

Denis O’Hare spilled juicy details about the super exclusive bash Lady Gaga threw for the cast, which includes regulars like Angela Bassett, Sarah Paulson and Kathy Bates.

“She had a pool; she dyed it blood red,” said O’Hare. “She had bathing suits for all of us. I jumped right in. I wore a woman’s bathing suit at one point. She had a massive amount of food for us.”

Denis O'Hare
Denis O’Hare (John Salangsang/Invision)

Being Lady Gaga, there was also some sauciness involved.

“She had a half-naked bartender. It was an incredible party and it was just us, so it was comfortable and we all got to know each other,” he said. “She got a birthday cake for Angela. I can’t describe it. It was an obscene birthday cake, it was shocking actually.”

Supermodel Naomi Campbell is among the new additions to the show this series. Naomi, who also appears on Empire, said the role came about when Ryan offered her a role over dinner.

Up until the screening, the cast wasn’t able to discuss anything about the new season. The British supermodel said keeping hush hush was really easy for her.

Naomi Campbell
Naomi Campbell (John Salangsang/Invision)

“It’s never been my thing of speaking before something happens,” she said. “I kind of find that bad luck.”

The show premieres in the US on October 7.