Mariah Carey broke Twitter for her alleged disappointing performance for the NBC Christmas Lighting at the Rockefeller Center in New York on Wednesday.

According to Radar Online, some of the Twitter comments about Mariah Carey's Christmas performance were downright hurtful.

Worse than "Glitter," really?

Adding to the fans' ire was the fact that the 44-year-old arrived to the event three hours late which forced producers to do a live show instead of pre-taping her performance.

Mariah Carey took to Twitter and wrote: "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."

But the damage was already done and Twitterverse exploded.

User Lexie wrote: "@MariahCarey this performance is worse than Glitter."

Chiraq added: "Please tell me someone else is seeing Mariah Carey embarrass herself on tv rn."

Spencer Graves quipped: "Mariah Carey sang 'All I Want For Christmas' last night in Rockefeller Center but instead of you, she asked for a vocal coach."

And beezus noted: "Omg Mariah Carey has lost it forreal. This is depressing."

It wasn't the first time that fans observed how Mariah Carey seemed to have lost her range as those who purchased very expensive tickets to her "Me. I Am Mariah" tour back in October ended up noting how she's straining to hit the high notes.

But Bobby Owsinski wrote for Forbes magazine that the Twitter criticisms of Mariah Carey's Christmas special have gone overboard.

"First of all, if you listen to Carey's performance, it's obvious that she had zero time to warm up. Many vocalists will spend up to an hour doing vocal exercises before a performance even begins to get their voice in show shape," he wrote, explaining that it was why Mariah Carey's couldn't hit the high notes.

Second, another factor that affected Mariah Carey's performance on the Christmas lighting event was the cold weather. "Just like any part of your body, your muscles begin to contract to conserve heat when exposed to low temperatures and the vocal chords are no exception. This makes singing much more difficult right off than when it's warm," the article explained.