Pink has teamed with child musicians to rework her hit What About Us for World Children's Day.

The new version of her hit has been recorded by child musicians for the United Nations' children's charity UNICEF, as part of a campaign to promote the event on 20 November (17).

UNICEF is offering kids the chance to experience what it's like to have top jobs in media, politics, business, sport, and entertainment - including recording Pink's 2017 hit.

In a statement, the 38-year-old singer, real name Alecia Beth Moore, said, "This World Children's Day, I am teaming up with UNICEF to remind the world that children and young people's voices matter and that their perspectives must be included in the decisions that will shape their future.

"I am excited to lend What About Us to a global kids take over on November 20 as we celebrate the power of kids around the world speaking out about the issues that affect them."

One youngster who has already made her way in the entertainment world is Stranger Things star Millie Bobby Brown, 14.

The teenage actress also gave her backing to the campaign, saying, "It's our day, everyone! A day for us to raise our voices and unite. So let's do it - in our schools, with our friends, with our families!"

On the day itself, children will gather at events in New York and Geneva, Switzerland to discuss the issues that matter to them.

The event at the United Nations building in New York will also be attended by Transformers star Isabela Moner and R&B duo Chloe x Halle.

Retired soccer star David Beckham is also involved in the day, as he has recorded video interviews with children on how they would like to change the world.