Lululemon Athletica has filed a lawsuit against Costco Wholesale, alleging that the warehouse-club chain is selling knockoff ...

The athleisure brand filed a suit on June 27 against Costco, claiming its Kirkland Signature line is selling knockoffs of its ...

Lululemon is suing Costco for manufacturing and selling clothing that looks like their own high-end athleisure at bargain ...

The new minimalist-bent, soft activewear, intimates and loungwear label debuted its first collection of foundational layers.