Hauer-King's Instagram is like a who's who of cool, young actors. From snapping pictures with his "The Little Mermaid" costars Melissa McCarthy and Halle Bailey, to showcasing special moments with his former "Little Women" co-star Maya Hawke (aka Robin from "Stranger Things") as well as "The End of the F**king World"'s Alex Lawther, he has a bulging contacts book. He's pals with Josh O'Connor, aka "The Crown"'s Prince Charles, who jokingly gave him a signed copy of "The Riot Club" on DVD as a birthday present.