Missi Pyle wears a Time's Up pin as she arrives at the 75th annual Golden Globe Awards at the Beverly Hilton Hotel. Picture: Jordan Strauss/Invision/AP

From flowing gowns to tailored tuxedos, Hollywood's film and television stars dressed in their finest black on the Golden Globes red carpet on Sunday in solidarity with the Time's Up campaign to fight sexual harassment in the workplace.

Jessica Chastain, Laura Dern and Natalie Portman led female and male nominees as well as attendees dressed in black at the awards show where the sexual harassment scandal roiling Hollywood is expected to dominate the conversation.

"We're here for the Time's Up movement. Octavia (Spencer) is my date - girl power! We stand in solidarity against any abuse of power," Chastain, nominated for "Molly's Game" and wearing a black velvet gown with a silver sequined back, said in a televised interview with NBC on the red carpet.

"It's about people who are voiceless, and it's about empowerment," added Spencer, who is nominated for "Shape of Water."

Octavia Spencer, left, and Jessica Chastain arrive at the 75th annual Golden Globe Awards at the Beverly Hilton Hotel on Sunday, Jan. 7, 2018, in Beverly Hills. Picture: Jordan Strauss/Invision/AP

In the week leading up to the awards ceremony, more than 300 Hollywood industry figures including actors, directors and writers, launched the Time's Up campaign to address workplace sexual harassment misconduct.

Portman, who joined Instagram in the past week to promote awareness of Time's Up, opted for a black velvet dress and accompanied a pregnant America Ferrera, wearing a black sequined dress with a tuxedo jacket, on the carpet.

Mariah Carey, from left, America Ferrera, Natalie Portman, Emma Stone and Billie Jean King arrive at the 75th annual Golden Globe Awards at the Beverly Hilton Hotel. Picture: Jordan Strauss/Invision/AP

"It's an incredible opportunity to get to go with a friend, an activist, someone who can have our voices together because we've been separated for so long ... and how much louder and stronger our voices can be when we come together," Portman said.

Dern, in a strapless black gown, was accompanied by Monica Ramirez, the co-founder and president of the National Farmworker Women's Alliance (Alianza Nacional De Campesinas), which represents more than 700,000 women working in the agricultural industry, fighting workplace sexual misconduct.

"It's time for us to make a difference," Dern said.

Monica Ramirez, left, and Laura Dern arrive at the 75th annual Golden Globe Awards at the Beverly Hilton Hotel. Picture: Jordan Strauss/Invision/AP

While black was the palette of choice on Sunday, stars spun their own twist with an array of textures and silhouettes.

"Black-ish" star Tracee Ellis Ross donned a black headwrap with her black satin Marc Jacobs halterneck dress, "The Crown" star Claire Foy opted for a black tuxedo suit, twinning with her co-star Matt Smith, and "Will and Grace" actress Debra Messing wore a black sequined Christian Siriano dress with trousers.

Tracee Ellis Ross, from left, Emma Stone and Billie Jean King attend the 75th annual Golden Globe Awards at the Beverly Hilton Hotel. Picture: Chris Pizzello/Invision/AP

"Get Out" actress Allison Williams wore a strapless sequined Armani Prive black gown with a bold orange and silver bodice, while Mandy Moore opted for a black sleeveless halterneck Rosie Assoulin gown with a red sash.

Allison Williams attends The 75th Annual Golden Globe Awards at The Beverly Hilton Hotel on January 7, 2018 in Beverly Hills, California. Frederick M. Brown/Getty Images/AFP 
Mandy Moore arrives at the 75th annual Golden Globe Awards at the Beverly Hilton Hotel. Picture: Jordan Strauss/Invision/AP

Angelina Jolie, accompanied by her son Pax and nominated for her film "First They Killed My Father," wore a black gown with sheer sleeves embellished with black feathers.

Actor/director Angelina Jolie and Pax Thien Jolie-Pitt attend the 75th Annual Golden Globe Awards at The Beverly Hilton Hotel. Picture: Frazer Harrison/Getty Images/AFP