On Friday, members of the SAG-AFTRA union, which represents roughly 160,000 workers, went on strike after failing to reach an agreement with studios following contract talks.
It's the first major walkout in over 40 years and the first time since the 1960s that a strike has corresponded with the Writers Guild of America (WGA), which has been on strike since May 2.
The groups are demanding increased base pay and streaming residuals as well as guarantees over the use of AI in the industry.
Since the strike began, some actors have voiced their support through statements and displays of solidarity.
George Clooney was among them, calling it an "an inflection point in our industry," according to Deadline.
"For our industry to survive that has to change. For actors, that journey starts now," he added.
Meanwhile, on Thursday, the "Oppenheimer" cast walked out of the film's premiere in London in solidarity ahead of the SAG-AFTRA strike.
But some have taken it a step further by joining picket lines outside of major studios like Disney and Paramount in Los Angeles and New York City.
From Mandy Moore and Rosario Dawson to Joey King and Jason Sudeikis, see the Hollywood stars showing their solidarity with the strike.