Zip Pullover purchased from Costco will set you back about $8. In a lawsuit, Lululemon Athletica alleged that the Danskin pullover and other products sold at Costco are illegal knockoffs of Lululemon’s premium activewear.

People on social media and news outlets have noted that Costco sells items similar to pricey Lululemon apparel — but are they too similar?

Lululemon filed a lawsuit against Costco, claiming the company has been selling lower-priced duplicates of some of its products.