The world cheers Arquette's call
Patricia Arquette's call for equal rights for women struck a chord not only with those in the Dolby theatre but also those watching around the world.
The Boyhood star used her short time on stage as she collected the award for best supporting actress to make a firm political point.
As well as thanking her family and the film's cast and crew, Arquette told those watching: "To every woman who gave birth to every taxpayer and citizen of this nation. We have fought for everybody else's equal rights. It's our time to have wage equality once and for all and equal rights for women in the United States of America."
Meryl Streep was pictured shouting "Yes" and clapping alongside Jennifer Lopez, as those in the theatre cheered her impassioned speech.
Former Will And Grace star Debra Messing tweeted "AMEN!!!" while filmmaker Michael Moore said: "God bless you, Patricia Arquette: a great actor, a brilliant citizen, you've just won the admiration of millions. Much love."
Charmed actress Rose McGowan said: "Hell yes! Patricia Arquette, so proud of this wonderful artist."
Natural Born Killers actress Juliette Lewis commended Arquette on her delivery, saying: " THANK YOU Patricia Arquette for saying IT so perfectly."
Arquette tweeted earlier that charity work had taken preference in her Oscars preparation over a beauty regime.
She wrote: "No time for a manicure this morning, was launching our Chideo sweepstakes to win an experience with me."
The 46-year-old, an ambassador for charity network Chideo, is offering people the chance to win a trip to work alongside her carrying out humanitarian work.
Speaking backstage, Arquette said she hugged Streep, whom she called "the queen of all actresses".
She said: " It is time for women - equal means equal. And the truth is, the older women get, the less money they make. The more children ... the highest percentage of children living in poverty are female‑headed households.
"And it's inexcusable that we go around the world and we talk about equal rights for women in other countries and we don't ... one of those Superior Court justices said two years ago in a law speech at a university 'We don't have equal rights for women in America and we don't because when they wrote the Constitution, they didn't intend it for women'.
"So the truth is, even though we sort of feel like we have equal rights in America, right under the surface, there are huge issues that are applied that really do affect women. And it's time for all the women in America and all the men that love women, and all the gay people, and all the people of colour that we've all fought for to fight for us now."