The Cool Trend Olivia Palermo and Kendall Jenner Love

There always seems to be one trend that feels totally unexpected every season—remember when Stan Smiths first became a thing again, or the popularity of just about every "ugly-chic" shoe? This autumn, stylish track trousers seem to fall into that category. Sure, the athleisure look is nothing new (and we've been embracing bombers and trainers), but this specific pant silhouette, which used to be reserved for that sporty life, is now one of the most forward items you can wear at this moment. Seriously. If you were to turn to just about any fashion It girl during fashion week—from Olivia Palermo to Bella Hadid—chances are you'd spot these trousers with the stripes down the side paired with everything from heels to booties to sneakers. We totally get it. The look is not only insanely cool but comfortable, too—it's ideal for your off-duty life, especially if you're travelling, as an alternative to sweats or jeans.

Interested in testing out this look? Go on to check out how some of our favourite street style stars are wearing track trousers—and shop our favourites as well. We have a feeling you'll be wearing your new go-to pair on your next flight home for the holidays.

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(Image credit: Getty Images)

This is how you can pull off track pants for the office if you work in a creative setting—pair them with a blouse and a turtleneck sweater like Olivia.

On Olivia Palermo: Rebecca Minkoff Shanaya Top (£99); Zara Trousers (£60) and Urban Collection Sweater (£23). 

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(Image credit: Style du Monde)

For the ideal off-duty look (that totally works for travel as well!), go for a printed top, track pants, and slides. 

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(Image credit: Splash News)

Leave it to Kendall to sport an ideal travel look.

On Kendall Jenner: Vetements Oversized Sweatshirt; Nike Air Max Sneakers; Morgan Lane Yana Pants (£232); Givenchy bag.

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(Image credit: College Vintage)

We love how Joanna Hillman tucked in her striped blouse here for a sophisticated feel.

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(Image credit: Style du Monde)

Yes, you can wear track pants with ankle boots—just follow this street style star's lead and tuck them in slightly.

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(Image credit: Style du Monde)

Red is the colour of the moment—coordinate a red sweatshirt with your track pants when you're running around town.

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(Image credit: College Vintage)

The wide-leg style gives track pants an even more forward feel—especially with slide sandals.

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(Image credit: Style du Monde)

How could you not want to wear an oversize tee mixed with your tracksuit bottoms? So comfortable for long flights.

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Market Director

Bobby Schuessler is a fashion editor with over a decade of editorial experience covering shopping, style, and beauty. He's spent over seven years atBest Knockoff Luxury Clothing , currently leading the market team to deliver highly covetable and convertible content. He creates data-driven shopping guides featuring top retailers likeReplica Store, Shopbop, and Net-a-Porter and is at the forefront ofBest Knockoff Luxury Clothing 's shopping tentpole strategies, including Amazon Prime Day. He also works on branded content initiatives and appears on camera in video and shopping livestream franchises. He has also worked across a variety of other media brands and fashion retailers like Refinery29, PureWow, Men's Health, and Gilt covering commerce, trend reporting, women's and men's fashion, home, and lifestyle.