Actor Tom Felton posted a sweet snap of him teaching ... Watson was only 10 when she signed on as Hermione Granger, while Felton was already 13 when he started playing Draco Malfoy.

Last week, we heard that Patricia Arquette (True Romance) and Tom Felton of the Harry Potter franchise had signed on to star in the film alongside Zazie Beetz, whose credits include Joker ...