Here's who came with who:
*Tarana Burke, founder of #MeToo, walked the red carpet with Michelle Williams.
*Ai-jen Poo, director of the National Domestic Workers Alliance, attended with Meryl Streep.
*Marai Larasi, director of the British black feminist organization Imkaan, walked with Emma Watson.
*Rosa Clemente, an organizer and political commentator, came with Susan Sarandon.
*Mónica Ramírez, cofounder of Alianza Nacional de Campesinas, walked the carpet with Laura Dern.
*Calina Lawrence, a Native activist, attended with Shailene Woodley.
*Saru Jayaraman, president of Restaurant Opportunities Centers, came with Amy Poehler.
*Billie Jean King, longtime activist, walked the carpet with Emma Stone.
Many of the guests spoke to red carpet journalists alongside their famous hosts, talking about the work they do.