Even brunettes have been tickled pink. Lizzo donned a magenta peplum dress with matching Valentino gloves and tights, along with a sleek, doll-like high pony at an event for her reality show, “Watch Out for the Big Grrrls,” in early June.

Fellas are getting in on the trend too — and not just Robbie’s co-star Ryan Gosling, who has embodied Barbie’s beau Ken in photos from the set. Along with Machine Gun Kelly, Sebastian Stan rocked a Valentino number in a playful pink shade at the Met Gala.

Celebs and influencers aren’t the only ones passionate about pink, either.

“BarbieCore is the summer’s latest fashion trend influencing everything from clothing to home decor, and we are here for it,” Kim Culmone, senior vice president and global head of design Barbie & fashion dolls at Mattel Inc., told The Post. “Fashion is a form of self-expression and BarbieCore celebrates living boldly and authentically.

“It’s been delightful seeing celebrities decked out in their best pink looks – Barbie would approve,” Culmone declared. 

Even high fashion is heralding the hue, declaring pink the new black. Valentino designer Pierpaolo Piccioli debuted a perfectly pink collection in partnership with Pantone for his fall collection this year. At the catwalk, even the backdrop, floors, seats and runway were the same shade, letting the palette dazzle.

“Pinks are no doubt ‘having a moment.’ In fact, pink is having more than a moment,” Laurie Pressman, vice president of the Pantone Color Institute, told The Post. “It is a color family we have seen growing in popularity across the spectrum since 2013, one which sparked the intro of Millennial Pink and with the rise of the ‘gender blur’ became even more prominent. A time where we began doing away with all color rules and breaking down the boundaries.”

Pressman suggested that today’s pink explosion is about self-expression and, especially, release.

“The bright pinks and fuchsias we are seeing today are exultant and empowering. They are stand-out statements being worn with confidence,” Pressman continued. “Vibrant and high-energy. they help us to feel uninhibited and free.”

Or, as the Italian house Valentino told Forbes, it is “a liberation from the need for realism.”

Meanwhile, fashion stylist Shea Daspin, who styled Zoe Margaret Colletti in head-to-toe pink recently, told InStyle that Barbie “represents a lot more” than the color pink.

“She represents ambition and female agency,” Daspin said, “and that can manifest in how someone dresses, or who they decide they want to become.”

And the answer to the latter may be fairly simple.

“Barbiecore is all about unapologetically having fun and being yourself, like Barbie,” said Mattel’s Culmone.