TODAY fans have been left convinced that Mario Lopez got extensive plastic surgery as he filled in for Al Roker.
The Saved by the Bell star guest co-hosted the Rockefeller Tree Lighting alongside TODAY regulars Hoda Kotb and Craig Melvin.

Shortly after the show kicked off on NBC on Wednesday, fans flocked to Twitter to weigh in on Mario's appearance.
Many speculated that the 49-year-old had extensive plastic surgery, with one writing: "Whew @mariolopezvivia had some kinda work done to his face."
They added a GIF showing a woman whose face appeared "frozen" in one position.
Someone else tweeted: "#RockCenterXMAS doesn't feel the same without Al Roker. I can understand since health comes first. Mario Lopez got those shoes to fill when subbing this year."
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Other fans simply weren't happy to see Mario on the show.
One critic tweeted: "Why is Mario Lopez always on my TV."
Another wrote: "Seriously, when will they stop with #MarioLopez?"
Mario did not respond to positive or negative comments about him.
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AL'S ABSENCE
Al was not able to participate in Wednesday's event due to health issues.
The beloved Today meteorologist has been struggling with blood clots in his legs and lungs and was rushed back to the hospital just 24 hours after being released over Thanksgiving weekend.
The star fell ill on Friday — one day after he missed hosting the Macy’s Thanksgiving Day Parade for the first time in 27 years.
He was taken away from his home by ambulance as his frantic wife, Deborah Roberts, followed him to the uptown Manhattan hospital, according to a report from Page Six.
An eyewitness told the outlet: "Al was taken from his home on a stretcher back to the hospital on Friday, the day after Thanksgiving. His condition was worrying, but once back in the hospital he improved."
“His wife, Deborah, was understandably very upset. She had left her phone and other possessions inside their Tesla, which had malfunctioned and wouldn’t unlock, so she was trying to smash in a window.”
“Deborah then went to the hospital by taxi with her daughter, where Al has since been surrounded by his family.”
WHERE'S SAVANNAH?
Mario was due to step in for Al, co-hosting along with Savannah Guthrie and Craig.
Savannah revealed earlier on Wednesday, however, that she was under the weather and would have to miss the show.
In an Instagram post, the 50-year-old shared a photo of a thermometer that read 101.8 degrees, confirming that she was not well.
She captioned the post: "UGH – flu or something like it since Monday. I'm so sad to miss the tree lighting and TODAY. Hopefully it passes soon! Miss everyone. I will be watching."
She also updated her Instagram stories with the same photo, this time adding: "Hate missing the show and the Rock Center Tree Lighting. Will be watching from bed."
Savannah finished by stating the obvious, writing: "101.8 does not feel good."
In the comments section, fans wished her well.
"Get plenty of rest and fluids," one fan wrote. "Hoping it passes quickly."
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Another added: "Oh no. You need a splash of vitamin C! Get well soon."
While a third cried out: "Get well soon... You help that tree sparkle."

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