Timothée Chalamet said he “turned over every stone” — including gaining 20 lbs. — to play folk icon Bob Dylan in "A Complete Unknown," which earned him a Best Actor Academy Award nomination.

The fact that host Timothée Chalamet just earned an Oscar nomination for his role as Bob Dylan in “A Complete Unknown” raised the possibility, however slim, that Minnesota’s most celebrated artist might appear on the late-night show for only the second time in its 50-year history.

Timothée Chalamet learned to play guitar and sing like Bob Dylan for “A Complete Unknown.” He also gained 20 pounds to look more like the folk music legend, he revealed an interview with NPR. “I’ve turned over every stone.