Sydney Sweeney showed off her bombshell curves in a burgundy lingerie set as she promoted her SYRN underwear line. While the actress reportedly obtained a filming permit, officials say it may not have authorized the activity seen in the video. The Daily Mail has also reached out to Sweeney's representatives and the Hollywood Chamber of Commerce, but has not heard back, at this time. The Hollywood Sign, one of Los Angeles's most protected landmarks, has long been off-limits to climbers and stunts - with previous unauthorized attempts resulting in arrests and fines. Whether Sweeney's footage will ever be used commercially remains unclear, as any such use would reportedly require retroactive approval or licensing from the Hollywood Chamber of Commerce.