Her sentiments were echoed by a group of Democratic women lawmakers who hailed the party's "historic" decision.
"In 1776, not very far from here, our founding fathers created our nation. Ninety-six years ago, America's women first won the right to vote...We are preparing to shatter the highest, strongest, marble ceiling in our country, by electing Hillary Clinton President of the United States," Pelosi said.
She is the first woman to be elected as the Speaker of the US House of Representatives.
"When women succeed, America succeeds," they said one after other in brief speeches.
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Americans need Clinton in the White House, said California Senator Barbara Boxer. "Are you ready to elect the first woman President of the United States? I am beyond ready!" she exclaimed.
"We need Hillary in the White House! We need a president who knows it's just plain wrong that women make 79 cents for every dollar paid to a man. And yet her opponent refuses to support equal pay because 'the marketplace is going to make sure of it. Well, its 2016 and we're still waiting!" Boxer said.
"Women of colour, and women veterans are quickly transforming the face of entrepreneurship in our country. They need the capital to grow and the tools to thrive," said Congresswoman Nydia M Velazquez.
"Hillary Clinton has a plan that will ensure all of America's small businesses can compete and succeed in the global economy. Because Hillary sides with the little guy, that is why I am with her," she said, repeating Hillary's campaign slogan.
to insure every veteran gets the support, the healthcare, the education and the job training he or she needs to succeed.
"And we're proud to stand by Hillary Clinton, a candidate with clear plans to improve the lives of our veterans," said Congresswoman Lois Frankel.
For Congresswoman Katherine M Clark, Clinton's nomination meant a stronger America that is free from the grip of the gun lobby.
"Ninety-one Americans are killed by gun violence every day. Republicans and the big money gun lobby shouldn't be blocking common sense legislation to keep guns out of the wrong hands. We held a sit-in but now it's time to stand up and stand together to demand change,"" she said.
"Democrats are strengthening our fight against terror, by working with our allies, not abandoning them. Democrats know, we need to be strong and smart, to destroy ISIS and protect America, not reckless and rash.
"Democrats are insuring our military has the resources they need to do their job and our military know how to do their job better than anyone else in the world," she said.