Theory Shirts first surfaced on Chictopia's streetstyle gallery in Summer 2009 seen on blogger UnoCosa. She wore her yellow Theory silk with snaps shirt with a black vintage short gloves sleeve cropped sweater and brown vintage wide lege cuffed pants. Since then, Theory Shirts have grown in popularity as bloggers from Los Angeles, San Francisco, and LA-Chicago have discovered them. Theory Shirts are generally seen in casual, chic, and business casual style. Popular types of Theory Shirts are silk with snaps, plaid button down, blouse, cut out, and plaid. Blogger's favorite colors are black, white, blue, and light blue.
There are currently 78 streetstyle photos of bloggers wearing Theory Shirts. Most recently, blogger itsnotthatdeep of itsnotthatdeep.com rocked her white Theory shirt with a army green big buddah boots, navy sweatshirt material blazer, and light brown cargo pants.