The 'Come & Get It' singer has described her time in Nepal as "extraordinarily powerful" as she met with youngsters helped by UNICEF and aimed to raise awareness for its work.
Selena, 21, was photographed building a wooden block tower with children at a kids' club, and joining them in the playground as they left school.
She also spoke with students at the Satbariya Rapti Secondary School, and was gifted with a musical instrument following a group sing-along. Selena even joined in with a traditional dance.
"It was amazing to learn from these young boys and girls about how they are influencing their peers as well as adults on issues that have an impact on their lives," she said. "Many of the children I talked to expressed a desire to be future leaders in their society, and I was moved to hear them emphasize the importance of education."
She added that the children of Nepal had taught her "anything is possible", saying: "That's the message I would like to convey to young people across the world: Believe in your dreams and pursue them."
Other children Selena spoke with included young people who had been involved in the country's armed conflict. She admitted it was difficult to hear about their experience but was inspired by their dedication to a better future.
As well as visiting local kids, the former Disney star spent time chatting with Female Community Health Volunteers about how they aim to reduce illness and premature death among children and mothers.
Another part of Selena's visit allowed her to speak privately with survivors of domestic abuse during a meeting of the Gender-Based Violence Watch Group and Paralegal Committee.
Selena has been a UNICEF Ambassador since 2009, and frequently lends her support to the cause. She previously travelled to Chile and Ghana in her role.
It's clear her time in Nepal had an impact on her.
"This visit to Nepal was extraordinarily powerful—at times, devastating and heartbreaking, but also incredibly inspiring," she said. "At first when you witness children living in extreme poverty you wonder how it is possible that they can be deprived of their basic human needs and rights. Then you talk to these children and you see hope, promise and a bright future."
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