The pants are so valuable to Lululemon that the company once sued Calvin Klein for making a pair a bit like them.

Read more at Blisstree, which covered the Lululemon/Calvin Klein story.

Lululemon Sues Calvin Klein Over Patent Infringement

Lululemon's ideal male customer is named Duke. Here he is, also from the company's Facebook page

Hip yoga brand Lululemon sues Calvin Klein over claims that patented pants were copied

Hip yoga brand Lululemon sues Calvin Klein over claims that patented pants were copied

Trousers, Girls' Clothing (2-16 Years), Girls, Kids, Clothes, Shoes & Accessories - PicClick UK

The long, strange history of Lululemon Athletica Inc, North America's weirdest clothing brand

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Dueling Yoga Pants: Lululemon Takes Calvin Klein to Court - WSJ

The long, strange history of Lululemon Athletica Inc, North America's weirdest clothing brand

Lululemon Suing Calvin Klein Over Yoga Pants

Calvin Klein - FasterCapital

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Abercrombie & FITness – Making FITness a lifestyle