Jack Black strips to his underwear and performs Taylor Swift songs as he helps raise funds for crew members affected by Hollywood strikes

Jack Black delighted fans when he performed an impromptu striptease during The Give Back-ular Spectacular! fundraiser in Los Angeles on Wednesday.

The one-off variety show featured a host of stars who helped raise emergency relief funds for both union and non-union crew members facing financial difficulties due to the Hollywood strikes.

Among those who took the stage were Rachel Bloom, Bryan Cranston, Lily Tomlin and Jeremy Allen White.

Yet it was Jack who stole the show as the 54-year-old actor stripped down to his underwear on stage at The Orpheum Theater while performing Taylor Swift’s Anti-Hero.

The artist has been a fixture on the SAG-AFTRA picket lines since the strike action began last July.

Support: The one-off variety show featured a host of stars who helped raise emergency relief funds for both union and non-union crew members during the Hollywood strikes

He made sure he gave it his all at the fundraiser, performing a stand-up set before taking off his clothes and heading out into the audience to chat with the audience.

Jack then asked for “any requests” and after a fan asked about Taylor, he happily obliged, saying, “I know that one!” Everyone knows that damn song before she dances around the stage and sings along.

SAG-AFTRA negotiations have been rocky this week, with the longest strike in their history reaching the 100-day milestone on Saturday after talks with studios broke down.

“Today the CEOs came back to the table,” SAG-AFTRA told members in an email after negotiations concluded for Tuesday. “We will continue discussions with them tomorrow,” Deadline continued.

The Guild’s TV/Theatrical Negotiating Committee added: ‘We will continue to provide you with updates directly. Remember: Don’t believe anything you read in the press unless it comes directly from us. Continue to show up on the picket lines and make your voices heard across the country.

Then the studios abruptly ended discussions on October 11, saying the actors’ demands were expensive and the two sides were too far apart to continue.

The actors are in unknown territory. Their union has never been on strike for so long, nor has it been on strike since the birth of many of its members.

Last month, members of the Hollywood writers’ union celebrated a new deal that includes a five percent pay increase, streaming bonuses and AI protections when they return to work.

The governing boards of the Eastern and Western branches of the Writers Guild of America (WGA) both voted to accept a new deal, then declared that the strike would be over and that writers would be free to work.

The three-year deal includes significant wins in key areas writers have fought for: pay, length of employment, staff size and control over the use of artificial intelligence.

The writers are now encouraged to stand in solidarity with the actors.

Loving life: Jack stole the show as the actor, 54, stripped down to his underwear on stage at The Orpheum Theater while belting out Taylor Swift’s Anti-Hero

Jack has been on strike with his fellow actors, but has several projects planned for the future.

He is currently preparing for the release of the upcoming Christmas comedy Dear Santa, which follows a young boy who accidentally sends his annual Christmas letter to Satan, instead of Santa Claus.

The star of the Kung Fu Panda franchise will star in the upcoming film alongside the likes of Keegan-Michael Key, Brianne Howey and Post Malone.

The project reunites Jack with producers Bobby and Peter Farrelly, who co-wrote the script with director Ricky Blitt.

The actor and the filmmaking duo worked together on the 2001 romantic comedy Shallow Hal.

Dear Santa currently has no scheduled release date.

Solidarity: Jack has been on strike with his fellow actors but still has several projects in store for the future