Tessa Thompson is taking up the Time’s Up mantel and challenging others in Hollywood to make a difference by opening the door for female directors.

In a speech she delivered Saturday at the Art + Inclusion session during the Sundance Film Festival in Park City, Utah, the “Westworld” star announced the latest initiative from Time’s Up: the 4 per cent challenge, which asks actors and producers to work with more female directors over the next 18 months.

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“Because only 4 per cent of the top 100 studio films over the last decade have been directed by women, Time’s Up is initiating a challenge, the 4 per cent challenge, and I intend to take it,” she said.

“I commit to working with a female director in the next 18 months.”

Thompson, 35, took to Twitter to add some details, noting that she’s also committed to “doubling the number of women and POC journalist[s] covering the films I have coming out this year.”

It didn’t take long for Thompson to receive the support of fellow actresses Brie Larson, Jurnee Smollett and Kerry Washington.

Thompson then encouraged some actors to get involved, and received a groundswell of support from even more Hollywood heavyweights, both male and female.