Celebrity Sightings in New York City - September 10, 2017

Rihanna attends the after-party for the Fenty x Puma Spring 2018 on September 10, 2017 in New York City.

Robert Kamau/Getty Images

It took only about a minute into the first real show of New York Fashion Week for Tom Ford to establish that the fact that it was his first time showing in the city in a year didn't mean that he knew what was hot in the city any less: He kicked things off on the runway by sending out two pairs of fuchsia heels, followed by a fuchsia blazer worn by Joan Smalls, and then by the same blazer on Mica Arganaraz who was also decked out in head-to-toe pink.

As it turned out, those were the colors that would end up dominating the runways at the rest of New York's shows over the course of the next week, from the hot pink windbreakers and tulle gowns at Oscar de la Renta to the fuchsia sports bras, swimsuits, and boots at Rihanna's motocross extravaganza for Fenty, where models even made their way around giant piles of pink sand.

Fenty Puma By Rihanna at New York Fashion Week spring 2018.

Peter White/Getty Images

All that goes to say that yes, at long, long last, it seems like we are finally starting to emerge out of pastel womb that is "millennial pink," aka the hue that's dominated advertising and street style and even been at the core of brands like Mansur Gavriel for the past two years. The change, clearly, has been building, as millennial pink's much bolder cousin appeared out on the streets during Fashion Week, too, with this season's street style stars finally outfitted in looks that have been out for months now, just waiting to be acknowledged, like a Rejina Pyo that seemed omnipresent.

Street style at NYFW SS18. Photo by Adam Katz Sinding for W Magazine.

2017 Adam Katz Sinding

Street style at NYFW SS18. Photo by Adam Katz Sinding for W Magazine.

2017 Adam Katz Sinding

Of course, no one solidifies a trend like Rihanna and Gigi Hadid, and rest assured that this is one both are getting behind: Though both have been endlessly booked over the last week, they also managed to be photographed in pieces like a track suit, in the case of the former, and a silky fuchsia one-piece, followed up on by a chunky turtleneck and even a pair of sparkly, fuzzy mules in the case of the latter.

And, of course, no one closes out New York Fashion Week like Marc Jacobs, who, for its grand finale, filled the cavernous Park Avenue Armory with all manner of hot pink, from baggy cardigans to boas to turbans to strapless gowns. The opening look, though, said it all: Even though she was wearing a neon, hazmat orange pantsuit, the most eye-catching part about the model was definitely her hot pink fanny pack.

Achok Majak opening Marc Jacobs during New York Fashion Week spring 2018.

Slaven Vlasic/Getty Images

Related: For Alexander Wang, One Model Got a Pink Hair Transformation Dubbed "Rose Quartz"

Paris Hilton Breaks Down Her 13 Favorite 2000s Trends, and Why They're Still Hot: