Mike Blake/Reuters
Teens are increasingly buying gear from Nike and Lululemon over denim classics from brands like Abercrombie, according to a recent Piper Jaffray survey on teen spending.
Activewear now comprises 28% of teens' apparel purchases, up from 6% in 2008. Nike, Lululemon, Under Armour, and Adidas are the most popular brands for athletic apparel.
Kim Bhasin at The Huffington Post notes that the "athleisure" trend, where teens wear workout apparel as casual clothing, is taking over.
Leggings, especially yoga pants for Lululemon, were ranked as the most popular trend among female teens, Bhasin writes. Jeans were not named in the top 10 trends.
Here's a chart showing the decline of denim and rise of activewear.
Piper Jaffray