Zac Efron has been trending on social media, after partaking in a video call on Facebook Watch.
The Greatest Showman actor's fans have been commenting on his facial appearance, after Zac collaborated with Bill Nye The Science Guy to celebrate Earth Day.
In the clip, part of 'Earth Day! The Musical', Zac says to camera, "A big budget musical spectacular? Bill, wow. I knew you were smart, but I think you're a genius."
While some fans have commented on how nice it is to see him on screen, others have questioned whether Zac's face looks different.
It goes without saying that it's not for anyone to comment on another's appearance, as Jameela Jamil perfectly summed up in a tweet of her own.
She wrote, "Risky business piling onto someone about their face or body at the best of times, in particular before even knowing why their appearance has changed. #ZacEfron."
Zac appeared alongside the likes of Justin Bieber and Charli D'Amelio in the Earth Day! The Musical video, which aimed to "harness the creative power of Hollywood and drive awareness to help protect the planet from climate change."
You can watch the full video here:
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