Instagram just got a pretty notable new user: Angelina Jolie.

This weekend, the 46-year-old actress finally joined the social media platform, and she marked her arrival with a moving post.

Jolie wrote, “This is a letter I was sent from a teenage girl in Afghanistan. Right now, the people of Afghanistan are losing their ability to communicate on social media and to express themselves freely. So I’ve come on Instagram to share their stories and the voices of those across the globe who are fighting for their basic human rights.”

The slideshow Jolie shared is titled, “A Letter from an Afghan Girl,” and the middle image is a snapshot of the actual letter that was sent to the actress.

Further in her caption (which can be read in its entirety here), Jolie explains her history with Afghanistan. “I was on the border of Afghanistan two weeks before 9/11, where I met Afghan refugees who had fled the Taliban,” she said.

Then, after detailing many of the horrors facing this country, Jolie ends her message with a call to action and a request for people to come together to try to help the nation. “Like others who are committed, I will not turn away,” she says. “I will continue to look for ways to help. And I hope you’ll join me. #Afghanistan #AfghanWomen #AfghanGirls #HumanRights.”

Fellow celebs were very moved by Jolie's inaugural post. “Thank you for being you,” Alyssa Milano said. British Vogue editor-in-chief Edward Enninful wrote, “Thank you for using your platform for good.” Meanwhile, the official UN Refugee Agency account commented, “Welcome to Instagram Special Envoy - your voice and those who join you are needed now more than ever.”

We couldn't agree more.

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