Oprah Winfrey is “with her.”

During the premiere of her OWN megachurch drama ‘Greenleaf,’ the media mogul threw clear support behind Hillary Clinton when asked if she backed the campaign.

Winfrey was fresh off the heels of headlining the United State of Women Summit in D.C. and spoke to the historic implications of getting the chance to vote for the possible first female president.

–Michelle Obama’s perfect advice on dealing with ‘haters’

“I really believe that is going to happen,” she told ET’s Nancy O’Dell. “America, it’s about time that we make that decision.”

“Regardless of your politics, it’s a seminal moment for women,” she added. “What this says is, there is no ceiling, that ceiling just went boom! It says anything is possible when you can be leader of the free world.”

When asked back in October, Winfrey told NPR’s Gwen Ifill that she didn’t “see a role” for herself in making any endorsements this election cycle.

–Oprah Winfrey reveals first look at megachurch drama ‘Greenleaf’

Oprah Winfrey’s endorsement of Barack Obama during his first presidential campaign was a game-changer, which some experts say helped him win the Democratic primary.

Winfrey joins a long list of female celebrities who have given their support to Secretary Clinton, including Kerry Washington, Shonda Rhimes and Uzo Aduba.

Last week Clinton claimed Democratic primary victories in California, New Jersey and New Mexico, making her the first woman to win the nomination for president of a major political party.

–Oprah Winfrey makes $12 million from tweet about bread