Our guest blogger today is Elizabeth Jessop, the US representative to last week's G(irls)20 Summit. Elizabeth reports on the Summit and what girls can do for themselves and the world. She is part of the GirlUp.org movement of girls helping girls! Share with the favorite girls in your lives!

There are 3.5 billion women and girls in the world…and therefore, 3.5 billion ways to change the world. As we say at Girl Up, together, we are stronger!

What is this all about? The G(irls)20 Summit.

The summit brings together one girl, aged 18 to 20, from each G20 country and one girl from the African Union, to discuss the economic impact women and girls have on the global economy. This year the summit focused on food security and violence against women at the Instituto tecnologico Autonomio de Mexico.

We heard from the World Bank, World Economic Forum, the UN, the NoVo Foundation, Norton Rose, Nissan, the Nike Foundation, the Girl Effect, Google, and many others.

On Monday, we had the opportunity to meet with the First Lady of Mexico, Margarita Zavala, and Ambassador Espinosa, the Minister of Foreign Affairs in Mexico. 

The summit panels were incredible, focusing on women in agriculture and the impact of empowering women farmers; the role of science and technology in increasing women’s productivity; constraints to agricultural productivity; violence against women and violence in the workplace; trafficking; etc. 

While at the G(irls)20 Summit, prior to the panels, the delegates participated in more than 25 hours of workshops focused on business planning, communications and media, political engagement, etc. to give us the necessary skills to help women and girls in our own community. 

As a result of the summit, we will meet in an all-day session to discuss initiatives that give women a voice in the economy. We will develop a communiqué that will be delivered to the G20 leaders. 

As the U.S. Delegate, I would like to see more women like First Lady Zavala and Ambassador Espinosa act as leaders in my own country.

Currently, only 17 pecent of the U.S. Congress is women. As a part of Girl Up, we can give a voice to both American girls and girls around the world. Each of us was inspired to get involved with Girl Up and start our own Girl Up Club! I learned that one of the best things I can do as an American girl, is raise awareness.

One way is to mobilize our friends and communities through a Girl Club, social media, fundraising, and talking to elected officials. 

Women are the key to economic productivity and social stability. That’s where you come in! Take a stand against child marriage.

Start a Girl Club today! Become a young global leader and use your voice for change.

The world's next big gathering is later this month for the Rio+20 Sustainable Development Summit and will include ALL the planet's big issues. Join us Thursday June 7th 1pm ET here in the Million Moms Challenge for a LIVE CHAT with the United Nations Foundation. Chat details here.