Fashion "dupes," or less expensive versions of high-end clothing and other accessories, are just about everywhere these days.

Lululemon Athletica claims in its lawsuit filed in the U.S. District Court for the Central District of California that Costco ...

Lululemon, a premium athleisure company based in Vancouver, Canada, filed its lawsuit against Costco on June 27 in California ...

Lululemon is accusing Costco of stealing from its "path-breaking" brand by selling dupes of its sweatshirts, jackets and ...

Lululemon has sued Costco, alleging the retailer sells low-cost athleisure apparel knockoffs that unlawfully infringe ...

The athleisure company alleged in a lawsuit that Costco is selling discounted "dupes" of some of Lululemon's most popular items.

Dupes are a common phenomenon in fashion, but they have risen in popularity in recent years thanks to social media ...