Guests wishing to attend the Met Gala, the Sundance Film Festival or Cirque de Soleil will need to show proof of full vaccination to enter, it has been revealed.
The New York fashion event, which takes place on September 13, is also requiring all guests including the rich and famous to wear face masks inside while not eating and drinking.
Billie Eilish will make history at the charity fundraiser by being the gala's youngest ever co-chair.
At the Met Gala, Billie Eilish will make history by being the youngest ever co-chair of the prestigious event
The popstar will join other celebrities including Naomi Osaka (pictured), inauguration poet Amanda Gorman and Timothée Chalamet as co-chairs
The theme for this year's New York social event is America: A Lexicon of Fashion, which is named after a new exhibition at the Costume Institute at the Metropolitan Museum of Art.
A spokesperson told The Daily Beast: 'Currently, all attendees at The Met Gala on September 13 must provide proof of full vaccination and will also be expected to wear masks indoors except when eating or drinking. We will update these guidelines as needed.'
The popstar will join other celebrities including Naomi Osaka, inauguration poet Amanda Gorman and Timothée Chalamet as co-chairs, while Tom Ford, Adam Mosseri and Anna Wintour will set as honorary chairs.
Announcing the hosts in May, Vogue said: 'Each of the Met's four co-hosts embodies the defining factor of American style: individualism.
The Met Gala, which takes place on September 13, is requiring proof of full vaccination for all attendees. Pictured: fundraiser organizer Anna Wintour
'[They have] developed a distinct visual language for their public personas, one that is informed by the legacy of iconic fashion made in the USA.'
Meanwhile the Sundance Film Festival, which is not taking place until January 20, has already said all participants must be fully vaccinated.
The 2022 Festival is requiring all people including volunteers, filmmakers and passholders to show proof of inoculation.
Following the largely virtual Sundance earlier this year, organizers are planning to hold in-person events in 2022 with screenings in Park City and Salt Lake City, Utah, as well as some 'satellite' screenings at regional theaters throughout the US.
The Sundance Film Festival, which is not taking place until January 20, has already said all participants must be fully vaccinated
Festival director Tabitha Jackson told Deadline: 'Health and safety is paramount. As we plan for the 2022 Festival, one of our most important considerations is how best to safely bring together artists, audiences, volunteers, and staff from around the world.
'As part of our commitment to this community, we will be requiring all participants attending the Festival, or Sundance-affiliated events, in person in Utah to be fully vaccinated.
'We are providing this information now to ensure that all in-person participants feel comfortable attending, and can adjust their travel plans if needed.'
Officials have not yet announced if attendees will need to wear a face mask at the festival.
Cirque de Soleil at Las Vegas is allowing guests in who take regular tests if they have not been fully vaccinated.
Cirque de Soleil at Las Vegas is allowing guests in who take regular tests if they have not been fully vaccinated
In a statement to KSNV, organizers said: 'As we continue to gradually reopen our shows, a series of protocols have been implemented with regard to Covid-19 in order to keep our artists, employees and audiences safe.
'In alignment with these policies, Cirque du Soleil will require for all show staff, artists and technicians to be fully vaccinated prior to reopening.
'Given the unique nature of our productions and operations, it is imperative that we embark on this process to maintain the continuity of our operations.
'Artists and employees that are not vaccinated are required to be tested regularly.'
While there is no decision yet on the wearing of face masks, Las Vegas Governor Steve Sisolak has reintroduced a mask mandate regardless of vaccination status.
New York Fashion Week will also require all guests and staff to be fully vaccinated, organizers announced this week.
The show, from September 8, will apply to everyone entering Spring Studios, while those under 16 will need to show a negative PCR or antigen test for entry.