For real was just talking to my wife about this phenomenon, watching the OG "It" (the Tim Curry one).

First off...holy shit, 12-year-old Richie Tozier was played by Seth Green. That means he was 12 in the late 80s, meaning he's in his 50s now.

I think that makes Seth Green a fair comparison here since he's one of the few childhood actors of the era still both alive and active. (Although he is also a ginger and therefore soulless...so maybe not a great comparison...)

50-something real-life Seth Green looks younger han 40-something whoever the hell played Richie in the original. Hell Jermaine Clement Bill Hader was nearing 50 for the remake and I would've never guessed.

(And while Clement Hader was a perfect great (Clement would've been better) cast for grownup Finn Wolfhard...I kinda wish it was Green, now that I realized he was the original young Richie)