They're dunzo!

Nick Cannon has filed for divorce from his superstar wife, Mariah Carey.

The funnyman went under the radar when he filed for divorce from the 44-year-old diva on Dec. 12, reports TMZ.

Interestingly enough, just one week before the America's Got Talent filed, the "Fantasy" singer showed up three hours later to film a segment for the Rockerfeller Center Christmas Tree Lighting, held on Dec. 3.

At the time, TMZ reported that the songstress was tardy because she was on the phone with lawyers -- given when the divorce papers were filed -- that seems very possible!

Mariah posted an apology to Twitter, writing, "Last night's situation was beyond my control. I apologize to all that showed up, you know that I would never want to disappoint you."

The former couple, who were married April 2008, have three-year-old twins, Moroccan and Monroe. Despite the 10-year age gap between the two, the two seemed to have a solid marriage until split rumors surfaced last summer.

In August, Nick told The Insider, "We have been living in separate houses for a few months."

And now it looks like the twosome are definitely not patching things up.

During an appearance on yesterday's episode of the Ellen Degeneres Show, Mariah announced she was doing a Las Vegas residency at Caesars Palace. We guess Nick won't be getting any of Mimi's Vegas cash!