Mariah Carey makes her secret Broadway debut in the musical Some Like It Hot.

Mariah Carey just did this for the hottest Ticket for the Great White Way.

The pop diva, 52, made a surprise cameo appearance at the opening night of the Broadway musical Some Like It Hot on Sunday — but not in the way you’d expect.

Carey – who serves as one of the show’s producers – came over the speaker at the start of the show with an audio recording for the audience.

“Welcome to the Shubert Theater,” Carey heard, according to People. “At this time, please take a moment to turn off your cell phones and remember that the use of photographic equipment and recording devices is strictly prohibited.”

Carey’s announcement reportedly wowed audiences, but also caused a stir backstage.

Video captured by the cast and crew shows multiple fake fainting spells upon hearing Mimi’s announcement. Meanwhile, other members of the company clapped and cheered.

According to the theater, Carey’s voice will welcome guests each night before the show.

The Grammy winner joined the production in late November, citing her love for Marilyn Monroe – who starred in the 1959 film the show is based on.

“I was first introduced to this story through the timeless film starring Marilyn Monroe,” Carey said in a statement. “She has been an important touchstone throughout my life, so much so that I purchased her prized white baby grand piano at auction.”

“When [producer] Neil Meron shared this new take on the beloved film, I knew I had to be a part of it,” she excitedly added.

Some Like It Hot stars Christian Borle, Adrianna Hicks and J. Harrison Ghee.

Carey’s cameo could add some zest to the production, which received a tepid review from The Post.