Timothée Chalamet, who plays Dylan in "A Complete Unknown," said he thought Fanning's experience was either a "great omen" for the film or the "exact opposite."

Timothée Chalamet and Elle Fanning discuss specific scenes, how Chalamet didn't try to bring himself to Bob Dylan, and James Mangold's direction.

Timothée Chalamet’s lauded transformation into rock icon Bob Dylan in “A Complete Unknown” was so complete, it went all the way down to his cuticles. The “Dune 2” actor, 28, ended rampant speculation about whether the surprisingly long fingernails he has in the new biopic (out Dec. 25) are actually his own during an interview with Fandango.