It’s the… the… the… The Grinch!

Jim Carrey reunited with his all-grown-up “How the Grinch Stole Christmas” co-star Taylor Momsen at the Rock and Roll Hall of Fame induction ceremony on Saturday night — 25 years since the premiere of their beloved film.

Carrey, 63, and Momsen, 32, posed for photos at the Peacock Theater in Los Angeles for the 40th annual ceremony when the “Grinch” actor made the shocking revelation.

“We haven’t seen each other since the Grinch,” Carrey told reporters, according to KNX News .

“25 years!” Momsen added.

Momsen, who was 7 years old when she played little Cindy Lou Who, revealed this week that she had no clue what Carrey looked like while filming the movie, as her co-star was always wearing the iconic green costume and makeup.

“Jim Carrey is the Grinch.”

See Full Page