Those “Mean Girls” are back, still lording over North Shore High, still cruel and cutting as only high school girls can be, still trying to make “fetch” a thing.

Tina Fey‘s greatest girl-on-girl teen take-down returns in triumph, a sometimes dazzling and most cinematic remake based on her Broadway musical which was based on her 2004 Lindsay Lohan/Rachel McAdams star vehicle.

It’s as fun as ever, and edgier than you remember. Because of course the “edge” has moved in 20 years. And hey, you go “Broadway” and you have to up the sexual ante. It’s sexier, bustier, gayer and earned almost too much “PG-13” latitude in the language and the veritable Russ Meyer Cleavage Collection in its casting and the way that cast is dressed, framed and photographed.

Fey’s musician husband Jeff Richmond composed the score, and he and Nell Bejamin reworked their thirteen Broadway show tunes to fit a new cast of energetic, high-range would-be pop divas and Broadway babies.

And first-time feature co-directors Samantha Jayne and Arturo Perez Jr. showcase their new stars with style, serving up sparkling, long singing tracking shots and 360 degree pans, punchy, music video/Bollywood-influenced production numbers and a party scene that, like the rest of the movie, really pushes that PG-13 edge.

But Fey’s message for her younger sisters remains intact. Girl-on-girl bullying is totally a thing and out of control in an oversexed, status, fashion and social-media-obsessed age.

The cleverest conceit here might be telling the tale with lots of TikTok tidbits. Characters drive the gossip, perform for their cell phone camera and cruelly comment and pile on each other via little video interludes.

That’s how the tale is narrated, too. The impressive Auli’i Cravalho and hilarious Jaquel Spivey are Janis and Damien, the artsy outsider and the big, hilarious “almost too gay to function” teen (Fey is always looking for that next Titus Burgess) misfits who sing and dish us into this “Cautionary Tale,” and out of it.

They’re the ones who befriend new kid Cady (Aussie Angourie Rice from “Spider-Man: Homecoming”), who sang a Kenyan savanna lament so convincingly her scientist mom (Jenna Fischer from “The Office”) decided to move them from Africa back to the states.

That’s how home-schooled Cady, with her scientist-taught smarts, simple fashions and wholesome values, arrives at North Shore and utterly fails to fit in.

Janis and Damien console and counsel her. But the minute this new novelty on campus falls under the gaze of “The Plastics,” the titular “Mean Girls” trio — ditzy Karen (Avantika), insecure Gretchen (Bebe Wood) and their “Apex Predator” queen, Regina (Reneé Rapp) — Cady is lured into their “pink” lair, their value system and their power plays.

As Cady is groomed and made-over, crushing on classmate Aaron (Christopher Briney), her personality changes, her values warp and her grades tumble. Mean Girls being what they are, as one of the showstoppers assures us, “Someone Gets Hurt” along the way.

Fey reprises her role as the teacher trying to talk some sense into these tarted-up teens.

“Home schooled?’ That’s a…fun way to take jobs away from my union!”

Her “Saturday Night Live” castmate Tim Meadows is back as the amusingly befuddled principal. Busy Philips is perfectly-cast as Regina’s poor-priorities-begin-at-home barely-tolerated Mom, who only wants to be the girls’ “bestie,” celebrating Cady as “‘new meat in our ‘lady taco.'”

Ahem.

And Jon Hamm is the gruff, unfiltered “health” and sex education teacher who crosses a couple of lines every time he pops up on screen. You’re covering the gamut from “whoremones” to condoms to “choking” in this class?

The songs were seriously reworked from the stage show, tailor-made to fit the singers and sometimes sex-up the proceedings. If Megan Thee Stallion features on one of the tunes, and has a funny string of TikTok cameos in the picture, you know it’s going to at least flirt with an R-rated vibe.

So whatever positive body images the casting serves us — short and tall, skinny and slim and zaftig — whatever sentimental sweetness comes through casting of Meadows and anybody else from the original film, this version of “Mean Girls” all but sexualizes itself right out of its natural demographic — tweens aspiring to be teens and “see how that’s done” in a movie.

You don’t want your tween-to-teen girls to be “mean.” You don’t want them to hide their brilliance to play “dumb” for a boy, or their dimmer, shallower female peers. And you probably don’t want them idolizing growing-up-too-fast teen sexpots, either — plunging necklines, immodest social media poses and posts and the like.

Yes, that’s the “edge” these days. But maybe this new “Mean Girls,” as fun and cool as it can be, isn’t for middle schoolers or parents who pay attention to how their kids grow up.

Rating: PG-13 for sexual material, strong language, and teen drinking.

Cast: Angourie Rice, Reneé Rapp, Auli’i Cravalho, Avantika, Jaquel Spivey, Bebe Wood, Tina Fey, Jenna Fischer, Jon Hamm and Tim Meadows.

Credits: scripted by Tina Fey, based on her stage musical which was based on her 2004 movie “Mean Girls.” A Paramount release.

Running time: 1:52