Taylor Momsen Wears Grinch Cindy Lou Who Dress 25 Years Later

Jim Carrey infamously went full method to play late comedian Andy Kaufman in the 1999 biopic Man on the Moon.

Which, since filming on How the Grinch Stole Christmas got underway that same year, resulted in some overlap for the star of both films.

"Jim Carrey didn't exist at that time," the actor told an audience at the 2017 Venice Film Festival, which hosted the premiere of the documentary Jim & Andy: The Great Beyond – The Story of Jim Carrey & Andy Kaufman Featuring a Very Special, Contractually Obligated Mention of Tony Clifton. "Andy actually affected the Grinch as well."

Namely, Carrey said he spent two hours on the phone with Howard one night going over notes, but in character as Andy.

"It was psychotic at times," he admitted.