AceShowbiz -

Mariah Carey was stunning as usual in a red figure-hugging dress while performing at Macy's Thanksgiving Day Parade on Thursday, November 26. Completing her look with white jacket and gloves as well as massive jewelry, she sang her holiday anthem "All I Want Is Christmas Is You" as she rode a float through the New York City streets.

However, what looked like a perfect performance from the 45-year-old superstar caused quite a stir on social media. Following her appearance, some fans accused her of lip-syncing and ridiculed her on Twitter.

"Turned to the parade just in time to see the Marching Illini play and Mariah Carey lip sync," wrote a fan. "This thanksgiving I'm thankful that Mariah Carey decided to lip sync at the Macy's parade," another fan sarcastically wrote. "Thank goodness Mariah Carey got to lip sync today because we all know that voice isn't what it used to be," another added.

this thanksgiving I'm thankful that Mariah Carey decided to lip sync at the Macy's parade

— Ã��LEC (@zetricore) November 26, 2015

Thank goodness Mariah Carey got to lip sync today because we all know that voice isn't what it used to be.

— Madison (@ImMadSon) November 26, 2015

Carey wasn't the only one being accused of faking her performance at the annual parade. Some people also slammed Chris Daughtry after they spotted him lip-syncing his "Long Live Rock and Roll" in front of people packing the streets and millions of people who watched on television.

Daughtry didn't deny the allegation, though. He admitted that he lip-synced during the parade and revealed that the other performers did too. "And so did EVERYBODY ELSE!" he tweeted in response to a fan who called him out on the social media.