Theory Leggings first appeared on Chictopia's streetstyle gallery in Fall 2009 seen on blogger hellokittiekat. She styled her Theory leggings with a Forever 21 boots, vintage mens coat, and Heritage top. Since then, Theory Leggings have grown in popularity as bloggers from San Francisco and Belmont have discovered them. Theory Leggings are generally seen in casual, comfortable, and basic style. Blogger's favorite color is black.
There are currently 11 streetstyle photos of bloggers wearing Theory Leggings. Most recently, blogger hellokittiekat wore her Theory leggings with a Elizabeth and James shirt and balenciaga shoes.