And most importantly, according to Collider, the screenplay will be handled by Celine Song — the Oscar nominee behind "Past Lives" (2023).
The original hit theaters in 1997 and became an instant classic. Julia Roberts played Julianne — a food critic who suddenly realizes she's in love with her best friend (Dermot Mulroney) just as he's about to marry someone else (Cameron Diaz).
Here are 3 reasons to get excited about the sequel:
Celine Song's writing the script — and that's hugeSong is one of the most precise and emotionally intelligent writers and directors working today. "Past Lives" — her semi-autobiographical story about unspoken feelings — was a festival darling that earned two Oscar nominations.

Source:
imdb.com
A second chance to reimagine these characters
We don't know yet if Julia Roberts, Mulroney, or Diaz will return. But even if they don't, the story itself — mature, layered, and no longer as naive as it was in the '90s — offers plenty of room for reinvention.
What happened to Julianne all these years later? Did she find love? Or is she still comparing every man to that one "best friend"? The right sequel wouldn't just continue the story — it would bring it to a real conclusion.
Everything's getting a follow-up these days — from "The Devil Wears Prada" to "Bridget Jones's Diary." But "My Best Friend's Wedding" wasn't just another rom-com — it was a movie where the heroine doesn't get the guy but gets something more important: a life lesson.
That kind of ending is rare. And now we might get a second act. If anyone can tell this story without falling into clichés, balancing drama and comedy in equal measure, it's Celine Song. Earlier, we at zoomboola.com covered in detail the filming of "The Devil Wears Prada" sequel here.