Sisters of '77 is a documentary film that chronicles an unprecedented event in women's history, the first National Women's Conference in Houston, Texas in November 1977. The purpose of the National Women's Conference was to end discrimination against women and promote their equal rights. The conference was the first federally funded women's conference, and brought together over 20,000 women and men from around the United States.

Sisters of '77 provides a look at a pivotal weekend that changed the course of history and the lives of the women who attended. The film incorporates rare archival footage and interviews of leaders relating this history to the present. The conference attendees included former first ladies Lady Bird Johnson, Betty Ford, and Rosalynn Carter. The women present included Republicans, Democrats, African Americans, Asian Americans, Latinas, Native American, pro-choice, pro-life, straight, gay, liberal and conservative women. The most influential leaders attending the burgeoning women’s movement included Bella Abzug, Betty Friedan, Gloria Steinem, Eleanor Smeal, Ann Richards, Coretta Scott King, Billie Jean King, and Barbara Jordan.