Justin Bieber visited Typhoon Haiyan victims in the Philippines and played a kids' concert in the devastated town of Tacloban.
The 19-year-old pop star flew into the central city of Tacloban, where he handed out shirts, toys and basketballs to children.
The Canadian singer visited a school being used as an evacuation centre in the wake of last month's Typhoon Haiyan, which flattened entire towns and villages, and left nearly 6,000 people dead.
More than 1,700 others remain missing, and around four million have been made homeless.
He also saw a temporary classroom, packed with around 300 youngsters, before moving to an outdoor stage to sing.
Kate Donovan, a spokeswoman for the United Nations Children's Fund (UNICEF), said: "He played a very beautiful set.
"He played a series of Christmas songs and some of his hits as well, including Baby."
At another school being used as temporary shelter, Bieber played basketball with some boys and posed for pictures.
"Justin brought a lot of joy, hope and cheer to the hundreds of children who were there," said Angela Kearney, UNICEF's emergency coordinator for Haiyan response.
In a video posted on a fundraising website, Bieber asked fans to help support the relief effort.
The money that would be raised would give child survivors access to education, vaccinations, clean water and sanitation, Ms Kearney said.
The singer, one of the most followed persons on Twitter and best known for hit songs such as Baby, Boyfriend, and Beauty And A Beat, said those donating could win a chance to see him working on his upcoming album in the studio.
"The moment I heard about the tragedy a few weeks back, I thought I can count on you guys to make a difference," he said in his appeal.
On Twitter, the singer said: "Most touching trip of my life. I saw the devastation first hand today. They need our help,"
Bieber is one of the several foreign and local celebrities and VIPs who have backed the continuing recovery effort.
Alicia Keys visited an air force base in Manila two weeks ago and distributed crayons and coloring books to children of families, who arrived aboard military mercy flights from the worst-hit areas.
(c) Sky News 2013
Original headline: Justin Bieber Visits Typhoon Haiyan Victims
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