Lady Gaga joins 'American Horror Story' cast
Lady Gaga performs during the 57th Annual Grammy Awards in Los Angeles, on February 8, 2015 (AFP)

Big news for Lady Gaga's legions of Little Monsters -- she is headed to a television screen near you, in what is sure to be a creepy role.

The quirky pop diva announced on Twitter that she will star in season five of "American Horror Story," and revealed the FX show's new theme -- "Hotel".

"Make your reservation now. #GagaAHSHotel," the star tweeted, along with a short black and white clip of herself in a thick black mask, which she removes before whispering, "Hotel."

The clip also reveals her name in the script used for the show's credits and its start date -- "October".

Gaga's announcement had been retweeted more than 70,000 times in about three hours, including by series co-creator Ryan Murphy -- who is also the brains behind high-school musical series "Glee."

Gaga, real name Stefani Germanotta, has had small roles in a few films including "Men in Black 3" -- and an uncredited appearance in an episode of "The Sopranos" -- but this will be her first starring role as an actress.

"American Horror Story" -- an anthology series with a different plot each season, but a repertory cast of actors -- was in search of a new star.

Jessica Lange, who won two Primetime Emmys and a Golden Globe for her work on the show, bowed out after four seasons.