I Gotta Feeling Black Eyed Peas
The One Direction star showed his kind side when he made a surprise call to this cancer sufferer's father.
Four year-old Jessica Whelan has been battling neuroblastoma, a cancer of the nerve cells, for thirteen months now and her parents have set up a Facebook page to raise awareness of her condition.
Recently they shared a heartbreaking image of Jessica in pain on their page which caught the attention of a certain British superstar.
It came to light after Jessica's dad Andy posted this message on the page...
Sadly, Jessica's parents have made the decision to stop her treatment as doctors said there is nothing further they can do for her.
But they continue to spread awareness of the pain of childhood cancer, which is one of the many reasons her father chose to share the heartbreaking image of Jessica in pain.
Her father said 'Perhaps by seeing this photo people not in our position will be made aware of the darkness that is childhood cancer, perhaps these same people may be able to do something about it so that in the future no child has to suffer this pain'.
Hopefully small acts of kindness such as a message from Harry Styles and other happy memories with her family thanks to incredibly kind donations from around the world will bring a smile to her face.