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Ariana Grande made a heartwarming and unexpected visit to young fans injured in Manchesterby Circa News

American pop star Ariana Grande surprised young fans who were injured in the Manchester attack in which a suicide bomber detonated a bomb outside a concert hall, killing 22 and wounding dozens more, according to the Associated Press.

Images of the heartwarming meet-and-greet circulated social media on Saturday morning.

Grande shared an image with a heart as the caption.

Grande brought smiles, and some silly faces, to the hospital. 

English singer-songwriter Harry Styles chimed in too.

Mann wrote, "This means more to us than all the amazing things people have done this week.when your daughter asks after her 2nd operation is ariana ok? so happy she came i could burst! Never seen jaden so happy!even cried again myself."

The visit previews Grande's "One Love Manchestere" benefit concert which is raising money to an emergency fund established by the city of Manchester and the British Red Cross. Other high-profile stars, including Justin Bieber, Coldplay, Katy Perry, Pharrell Williams, Black Eyed Peas, and Miley Cyrus, are expect to perform at Sunday's concert. The full concert will air live at 2 p.m. EDT on Freeform, Disney's young adult cable network. It will also stream live on Grande's Facebook page and YouTube channel. ABC will air a one-hour highlight special.