The stars, who also wore black to show support for the #MeToo and #TimesUp movements, furthered their message of spreading awareness about sexual harassment and gender inequality by bringing the activists as dates.
"We believe we are nearing a tipping point in transforming the culture of violence in the countries where we live and work," the women said in a joint statement.
"It's a moment to transform both the written and unwritten rules that devalue the lives and experiences of women."
Streep, who was nominated for Best Actress in a Motion Picture Drama for her role in "The Post," brought with her to the ceremony Ai-Jen Poo who organizes female immigrant workers and is the director of the National Domestic Workers Alliance and is co-director of Caring Across Generations Campaign.
Poehler, a Golden Globes presenter, walked the red carpet with Saru Jayaraman, a workplace justice advocate for restaurant workers.
Dern, who won the Golden Globe for Best Supporting Actress in a Series, Miniseries, or Motion Picture for TV for her work in "Big Little Lies," was accompanied by Monica Ramirez who works to end sexual violence against women and advocates for Latina empowerment.
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Williams, who was nominated for Best Actress in a Drama Motion Picture for "All the Money in the World," attended the awards show with #MeToo founder Tarana Burke, who is also the director of nonprofit Girls for Gender Equity.
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