Mariah Carey has a secret holiday surprise in store for her fans.

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The hitmaker took to Twitter on Friday to tease what appeared to be some sort of new Christmas collaboration.

Carey shared a photo of three director’s chairs featuring the letters “MC,” “AG” and “JH” on the back.

The cryptic post was captioned with a simple Christmas tree emoji.

Fans quickly started guessing which other artists the “All I Want for Christmas” singer might be working with.

While most guessed that “MC” are Carey’s initials, some people speculated that “AG” might refer to pop superstar, Ariana Grande.

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Meanwhile, many fans guessed that “JH” could be alluding to “Dream Girls” star Jennifer Hudson.

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Nothing else is known about the project, which could potentially be a movie, song or music video.