Olivia Rodrigo turns MSG into a giant slumber party in sold-out headlining debut

Excellent 4 her.

When Olivia Rodrigo took the piano to sing her smash debut solitary “Drivers License” on Friday evening — throughout the 1st of four bought-out reveals at Madison Square Back garden on her “Guts” World Tour — it was nearly as if she had outgrown the track.

Just 3 a long time in the past — when the separation ballad floored it to No. 1 in 2021, placing the pop ingenue on the rapidly observe to a few Grammys — Rodrigo experienced nonetheless to graduate from Disney’s “High College Musical: The Musical: The Sequence.”

So singing about the rite of passage of finding your driver’s license built her truly feel just like the 17-year-old that she was when she wrote, recorded and released her very first of a few chart-toppers.

Flash ahead to April 2024, and Rodrigo has designed Disney a distant memory, leaving “High School Musical” in 2022, graduating from playing Radio Town Songs Corridor on 2022’s “Sour” Tour to generating her headlining debut at the significant daddy of New York arenas.

And although she was not even aged adequate to vote when she dropped “Drivers License,” she’s now 21, coming of ingesting age on Feb. 20.

“I experienced my first sip of alcoholic beverages in my lifetime on my 21st birthday,” said Rodrigo, although making a winking reference to her grandmother being in the audience.

Just before launching into the “Guts” nearer “Teenage Dream,” she ongoing, “I’m 21 now and just so joyful. I really feel like I know myself so effectively, and I imagine if [I could give] any suggestions to my 18-calendar year-aged self, I would notify her that growing up is f—king awesome.”

Definitely, the vibe on Friday night was fully magnificent, as hordes of screaming and loudly singing girls — a lot of in mini-skirts and Dr. Martens boots a la Rodrigo some accompanied by their parents  — turned the Backyard garden into 1 big slumber bash.

Soon after she arrived rocking out in a silver sequined two-piece to the “Guts” guitar jams “Bad Notion Proper?” and “Ballad of a Homeschooled Girl,” Rodrigo promptly veered into “Vampire,” the piano ballad that grew to become her most modern No. 1 single past July.

That she really should do just one of her major hits so early in her exhibit — and a slow music, no less — was a indicator of how self-assured Rodrigo was in her lesser acknowledged content.

With only two studio albums — 2021’s “Sour” and 2023’s “Guts” — she carried out for an 1 hour and 45 minutes devoid of it emotion like there was way too considerably filler, help save for a single slowish patch mid-exhibit.

No question, this is one particular created for the diehards — but obviously there are loads of individuals. (And, hey, at minimum the relaxed adult admirer didn’t have to stress about a line at the bar.)

With her voice and strength hardly ever wavering, Rodrigo — bringing to thoughts a mash-up of Billie Eilish and Avril Lavigne, with some of the ’90s alt-rock mind-set of opening act the Breeders — was alternately vulnerable (“Logical” and “Enough for You,” using a crescent moon throughout the arena) and potent (“Brutal” and “Obsessed”).

And there was even a relatable fangirl second with surprise visitor Noah Kahan on “Stick Season.”

Soon after ending her established with “All-American Bitch,” Rodrigo — who will return to MSG on Saturday, Monday and Tuesday — saved her punk-pop pout firmly in area for the raucous encore of “Good 4 U” and “Get Him Back again!”

Two decades soon after Rodrigo executed “Deja Vu” and “Uptown Girl” with Billy Joel at his household, the Backyard was all hers.