Get in, loser—we’re finally heading to “Mean Girls” in the West End! After a six-year wait since the stage musical adaptation of the 2004 film comedy premiered on Broadway, Tina Fey’s brilliant script has made a triumphant theatrical debut, and this dedicated production totally makes fetch happen.

The story remains largely unchanged, but now features an effective framing device. Theatre kid Damian and his artist best friend Janis narrate a cautionary tale to the new freshman class: how home-schooled Cady Heron moved from Africa, confronted high school cliques, and infiltrated “The Plastics,” led by Queen Bee Regina George and her sidekicks Gretchen and Karen, only to be seduced by popularity.

All of Fey’s iconic lines are present, welcomed like old friends. “She doesn’t even go here” earns applause, and the audience eagerly joins in when asked to name the date: “October 3rd.” The script has smart updates, removing outdated jokes and incorporating phones and social media.

As fellow theatre geeks, we instantly connect with Damian and Janis, brilliantly portrayed by Tom Xander and Elena Skye. Damian’s rendition of “Where Do You Belong?” transforms into a full Broadway number, complete with show choir backup and a dance break.

Composer Jeff Richmond and lyricist Nell Benjamin make inspired choices, giving each character a distinct musical genre. Janis gets rebellious rock, Cady’s innocence is reflected in her pop songs, Gretchen has a patter-song lament, Karen’s tunes are childlike, and Regina delivers seductive threats like a Bond villainess.

The songs are incredibly catchy. You’ll leave the theatre humming tunes like “Revenge Party,” “Apex Predator,” “I’d Rather Be Me,” or the fabulous self-absorbed riff “My name is Regina George / And I am a massive deal.”

A stellar UK cast brings their unique flair to these beloved characters. Charlie Burn’s Cady is adorable and hints at her dark side as she admires Regina’s power. Skye is explosive in Janis’s big numbers, and Xander is a consistent comic scene-stealer.

Georgina Castle is magnificent as Regina, portraying her as an aloof ice queen who meddles with others out of boredom. She impresses with her powerful voice and physicality, whether posing like a model or hilariously attempting to style out a neck brace.

Zoë Rainey excels as the sarcastic Ms. Norbury and the oblivious “cool mom” Mrs. George, who humorously struggles to find the straw in her oversized cocktail. Elèna Gyasi and Grace Mouat are wonderful as the panicked Gretchen and the hilariously dim Karen, respectively.

The second half of the show is overstuffed and leans too heavily on sentimentality, particularly during an oddly placed duet that redeems Cady at the wrong moment and in the sappy final number. Casey Nicholaw’s hyper-energized production, with its vibrant video backdrops, sometimes tries too hard to keep us engaged.

Despite these minor flaws, “Mean Girls” boasts an impressive joke rate, vivid characters, and a story that remains relevant 20 years later, offering insightful commentary on how teenagers—and the rest of us—should treat each other better. Wear your best pink shirt for this fun, life-affirming, and super grool musical.

“Mean Girls” is at the Savoy Theatre. Book tickets on London Theatre.