The man in charge of the Hollywood sign claims CGI was used in a video that appeared to show Sydney Sweeney decorating the landmark with dozens of bras.
A viral clip shared last week, which appeared to show the Euphoria star and a film crew accessing the tourist attraction, was recorded without permission, according to those who control the site.
Some have suggested there's no way they would have been able to get so close to the structure without police turning up.
Jeff Zarrinnam, head of the Hollywood Sign Trust, has insisted filming took place without authorisation, but is adamant parts of the footage were digitally altered.
Representatives for Sweeney have not replied to requests for comment.
The video, intended to promote the actress's new lingerie brand, was uploaded to her Instagram account last week.
Filmed at night, it shows the star and a group of others lugging duffel bags and equipment towards the Hollywood sign.
The actress and crew are seen unzipping the black bags and pulling out dozens of bras, which are then tied together and thrown over parts of the structure.
A final, wide shot shows the entire sign covered in a snaking chain of bras, before cutting to Sweeney as she poses and celebrates with the sign in the distance behind her.Zarrinnam tells Newsbeat he's sure the final shots of Sweeney's video were digitally altered.
He says climbing the 50ft (15.2 m) tall letters - especially at night - is a delicate job that can't be rushed.
"They used CGI for that," he says.
"There's no way you could have covered the sign in that amount of time."
Zarrinnam says authorised stunts where the sign has been modified in some way, such as a 2022 makeover to celebrate American Football team LA Rams winning the Superbowl, have involved careful planning and execution.
"It would take you hours to do that," he says.
He also says it's been incorrectly suggested Sweeney can be seen climbing the letter H in the video.
"I know that sign intimately," he says.
"She was climbing the letter L.
"If she'd tried climbing the H she probably would've fallen and broken her neck."
Filming at the Hollywood sign
.png)
Follow Us