Hillary Rodham Clinton announced officially today that she will run for president in 2016. Her official campaign site went live, and Clinton released a short video announcing her candidacy, entitled "Getting Started."

The video features several people talking about things they're getting ready for -- new jobs, marriages, spring cleaning -- and then Clinton herself.

"I'm getting ready to do something too," she says. "I'm running for president."

Clinton, who previously served as the senator for New York and the U.S. Secretary of State, as well as a previous residency in the White House when her husband, Bill Clinton, was president, has long been rumored for a run.

If she wins the Democratic Party's nomination and then the election overall, she would of course be the first female president of the United States.

"Everyday Americans need a champion, and I want to be that champion," she says in the video.

Daughter Chelsea Clinton immediately took to Twitter to say how proud she was of her mom.

It didn't take long for the opposition to crop up: Rand Paul, who has also announced a run for the presidency, has already posted an ad opposing Clinton, denouncing her as "the Washington machine."