KJ Apa Looks Unrecognizable After Buzzing His Famous Red Riverdale Hair

KJ Apa Instagram

KJ Apa has a whole new look!

The Riverdale actor, 25, debuted a new 'do on Instagram Thursday, showcasing a buzz cut that highlights his natural brown hair.

"Reset. One Fast Move," Apa wrote on Instagram, alongside the photo, which shows him sporting a flower behind his left ear and facial scruff.

Nearing 1.5 million likes Friday morning, the post prompted co-stars and fans to weigh in about the radical new look.

"OMG. I ❤️❤️❤️" wrote Apa's TV mom, actress Molly Ringwald.

RELATED: KJ Apa Enjoys Story Time with 4-Month-Old Son: 'Dr. Seuss Wins Every Time'

"Who's that?" actor Nicholas Galitzine asked.

Michael Kovac/Getty KJ Apa

"Lean, mean, clean and air stream! Looking good bud. #OneFastMove is going to be so siiiiiick," wrote Cougar Town alum Brian Van Holt.

Apa's newly shorn look coincides while the actor is making One Fast Move, a motorcycling racing film also starring Euphoria's Eric Dane. The film just began production in Atlanta, according to Deadline.

RELATED: Clara Berry Goes for a Dip with KJ Apa and Son Sasha in Family Photos: 'The Men of My Life'

It's been a year of transition for Apa, who welcomed son Sasha Vai Keneti with model girlfriend Clara Berry in September.

Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.

Since his son's birth, Apa has been sharing adorable glimpses of his and Sasha's story times with his 18.9 million Instagram followers, most recently posting a video of himself reading the classic children's book Goodnight Moon to the infant, who couldn't take his eyes off his dad.