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 Boston have discovered them. Theory Shirts are generally seen in casual, chic, and business casual style. Popular types of Theory Shirts are plaid shirt, silk with snaps, plaid button down, plaid, and cut out. Blogger's favorite colors are black, white, blue, and navy.
There are currently 79 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.