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 fall, stylish track pants 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—ideal for your off-duty life, especially if you're traveling as an alternative to sweats or jeans.

Interested in testing out this look? Go on to check out how some of our favorite street style stars are wearing track pants—and shop our favorites 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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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 ($128); Zara Trousers ($100) and Urban Collection Sweater ($36). 

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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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Splash  News

Leave it to Kendall to sport an ideal travel look.

On Kendall Jenner: Vetements Oversized Sweatshirt ($750); Nike Air Max Sneakers ($142-$242); Morgan Lane Yana Pants ($288); Givenchy Weekend Bag ($2783).

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College Vintage

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

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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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Style du Monde

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

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College Vintage

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

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Style du Monde

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

This is the style Olivia Palermo loves.

The triple stripe on the side gives these an even cooler twist.

Wear these with sneakers and an oversize blouse for the airplane.

Why not go for it with a wide-leg style, right?

The tapered detail makes these ideal to wear with heels.

These are a favorite among It girls.

Check out the legging-pant hybrid all the fashion girls are wearing.