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.