Selena Gomez, David Henrie and TikTok Stars Dixie and Charli D’Amelio Are Collaborating for a Good CauseSelena Gomez, David Henrie and TikTok Stars Dixie and Charli D’Amelio Are Collaborating for a Good CauseSelena Gomez, David Henrie and TikTok Stars Dixie and Charli D'Amelio are teaming up.Jessica NortonJessica Norton