NEW YORK—In a sweeping decree that has instantly invalidated centuries of textile history, local elegant women confirmed Tuesday that a polyester-blend jumpsuit can officially pass for an evening gown, provided the wearer possesses the specific hollow-eyed stare of an actress exiting a downtown coffee shop.

The breakthrough in modern etiquette, reported extensively by lifestyle publications eager to give wealthy people permission to wear pajamas to charity galas, establishes that the traditional boundary between formal evening wear and a mechanic's work uniform no longer exists. According to trend forecasters, the secret to achieving haute couture status in a garment originally designed for mid-century parachutists lies entirely in the subtle art of looking like you forgot how to button a shirt.

"People forget that true elegance is about refusal," explained longtime Tribeca resident Chloe Van Der Bilt, adjusting a utility zipper that ran directly down her sternum with the grim efficiency of a deep-sea diver. "Anyone can wear silk chiffon to the Met Gala. That requires tailoring, posture, and a basic respect for the occasion. But wearing a $4,000 onesie that makes you look like you are about to fix a septic tank while holding a matcha latte? That says you have transcended the need for human dignity.

Fashion analysts note that the look relies heavily on the 'Katie Holmes Method,' a proprietary blend of oversized outerwear, unwashed hair, and an expression that suggests you have successfully forgotten your own middle name. By pairing the industrial onesie with a pair of slippers you clearly wore through the lobby of your luxury apartment building, elite women are proving that luxury is no longer about craftsmanship or beauty, but rather about the financial freedom to look deeply unapproachable in public.

Lower Manhattan stylists emphasize that accessories are crucial to elevating the garment from 'toddler sleepwear' to 'gala-ready.' Experts recommend carrying an exorbitantly expensive leather tote bag stuffed entirely with discarded parking receipts, half-eaten pastries from a bakery you refuse to name, and a legal notice regarding a co-op board dispute.

"The jumpsuit is basically a blank canvas for your socioeconomic superiority," said trend curator Julian Thorne, speaking from a brunch spot where nobody was eating. "When you see a woman walking down Mercer Street in a dark green utility suit with five functional pockets she has never used, you aren't just looking at an outfit. You are looking at a living monument to the fact that she doesn't have to clock in anywhere ever again. Try wearing a standard evening gown to pick up dry cleaning at 2:00 PM on a Tuesday. You can't. It's gauche. But a $2,800 onesie? That screams effortless grace.

Critics of the trend, primarily consisting of people who still own irons, have pointed out that the garment essentially turns the wearer into an oversized toddler who has achieved final form. However, fashion insiders have swiftly dismissed these concerns as the bitter complaints of the un-styled, noting that true elegance has always smelled faintly of dry cleaning chemicals and mild dissociation.

As the trend continues to gain momentum across the boroughs, local elegant women are reportedly preparing for the upcoming gala season by simply wrapping themselves in heavy-duty tarps and claiming they bought them at an exclusive boutique in SoHo. Early reports indicate the look is already being hailed as a triumph of minimalist rebellion.