'Harry Potter' cast recalls first kisses, horrible haircuts in reunion special

Cast members Rupert Grint (R), Daniel Radcliffe and Emma Watson (L) arrive for the premiere of the film "Harry Potter and the Deathly Hallows: Part 2" in New York July 11, 2011. [REUTERS]

Daniel Radcliffe remembers the embarrassing haircuts, Emma Watson found meeting up with her "Harry Potter" cast mates "an unexpected joy," and director Christopher Columbus recalls the sets for the movies as "the greatest playground in the world."

Many of the cast of the "Harry Potter" film franchise reunited for a 20th anniversary TV special, called "Return to Hogwarts," to be broadcast on Jan. 1 on HBO Max.