Irina Shayk Pushed a Stroller Around New York City in a Robe and Knee-High Boots

Laura Reilly

Fashion "rules," we regret to inform you, are largely fake. In fact, the hallmark of any truly good dresser is that they often, if not categorically, contradict the so-called guidelines for how one should wear clothes. Our advice? Break them all.

Perhaps this was Irina Shayk's ethos when she stepped out over the weekend in an outfit that defied conventional fashion advice and, to some extent, logic. On a stroller-pushing walk through New York City, Shayk paired a full-on Skims pajama set, including a top, shorts, and full-length robe, with knee-high black heeled boots and a zebra-print baby bag, both by By Far. The PJ ensemble was naturally designed with indoor-wear in mind (at least that's our assumption -- we'd have to confirm with creator Kim Kardashian, though), so it's pretty impressive to see the model mom team the pieces with dominatrix-esque, three-inch-heeled footwear fit for a night out.

Related: Irina Shayk opens up about ex and life as a single mom

Whether Shayk was lounging around the house in the fuzzy three-piece getup when the urge to get some air struck her (Tracee Ellis Ross wearing Louboutins to her kitchen vibes) or she had planned to pair it with this Katie Holmes and Amal Clooney-loved boot trend from the beginning, we'll never know. All we can say for sure is that Shayk isn't afraid to shake things up, especially when it comes to so-called fashion "rules."

Shop Shayk's exact look, plus a few other expectation-breaking loungewear and boot pairings, below.

Get the look:

Skims Cozy Knit Robe

Shop now: $128;

Skims Cozy Knit Tank

Shop now: $52;

Skims Cozy Knit Short

Shop now: $58;

By Far Stevie 42 Boots

Shop now: $726;

By Far Eve Zebrina Bag

Shop now: $420;

Nordstrom Moonlight Dream Crop Pajamas

Shop now: $55;

Barefoot Dreams CozyChic Unisex Robe

Shop now: $99;

Avidlove Women's Shorts Pajama Set

Shop now: $23;

NY Threads Womens Fleece Bathrobe

Shop now: $17;

Naturalizer Sterling Knee High Boot

Shop now: $110 (Originally $230);

Steven New York Reallie Boot

Shop now: $200;

DREAM PAIRS Women's Thigh High Boots

Shop now: $16;

Blondo Women's Gallo Knee High Boot

Shop now: $100;