August 17, 2022 | 2:45pm

It’s not usually good to spy someone loitering in a trench coat in the men’s restroom — unless it’s Kourtney Kardashian putting a grunge spin on summer’s Barbiecore trend.

The eldest Kardashian sister, 43, stunned in a hot pink latex trench while backstage with husband Travis Barker, 46, at one of Machine Gun Kelly’s “Mainstream Sellout” tour stops.

The Poosh founder struck a pose in the venue’s men’s bathroom, smiling in front of a wall of urinals in her bubblegum-hued Kwaidan Editions coat ($1,475, originally $2,950) layered atop black lace lingerie.

On Instagram Stories, the reality star shared she did her own hair and makeup “the same ways I always do it” for the low-key shoot describing her simple beauty beat as “super minimal.” 

Barker re-posted a snap of the loved-up couple holding hands as he rocked black nylon Prada coveralls ($2,650), a silver studded choker and rock star-worthy sunglasses. 

kourtney kardashian posing in front of urinals
This latest photoshoot is proof that a Kardashian can make any backdrop look glam, including a men’s bathroom.

“Backstage,” Kourt captioned her Instagram carousel. Barker quipped, “what’s [sic] happens backstage” with a 🤫  emoji, telling his wife, “you’re perf.”

Some followers weren’t as wowed by the unexpected backdrop. “I love you but why are you in the men’s bathroom?” one fan questioned, as another eagle-eyed commenter pointed out, “not the pee in the urinal.”

kourtney kardashian in hot pink trench coat
Kourtney Kardashian struck a series of poses in the men’s bathroom while on a tour stop with husband Travis Barker.

These photos come just days after Kourtney showed off her life as a “tour wife,” sharing a snap of herself and her spouse canoodling at another MGK show.

And there’s really no better way to embrace the tour wife life than by venturing into dingy concert bathrooms.

kourtney kardashian and husband travis barker
The reality star and the drummer walked backstage after the MGK show.