Prince Harry was in a video for the group WellChild, which helps seriously ill children and their families.
Harry has been a patron of the organization since 2007.
He is appealing for inspiring children to join WellChild.
Harry's message comes days after Kate Middleton launched her new 'Shaping Us' childhood campaign.
Harry may be following Kate's lead or teasing her by posting about a topic near to her heart.
Harry expressed his gratitude for the work that WellChild does.
He requested nominations for the 2023 WellChild Awards.
Harry invited people to nominate someone remarkable for the award and promote the charity.
He looks forward to meeting with the award winners each year.