Black Cos Vests first surfaced on Chictopia's streetstyle gallery in Summer 2009 seen on Fabulosity blogger plparayno. He wore his black COS vest with a black William Francis shirt, black Burberry scarf, and black Zara pants. Since then, Black Cos Vests have grown in popularity as bloggers from Ratbag Heights and Fabulosity have discovered them. Black Cos Vests are generally seen in outdoor, vintage, and chic style.
There are currently 3 streetstyle photos of bloggers wearing Black Cos Vests. Most recently, blogger amiek of creditcrunchchic.com styled her black COS vest with a black staccato shoes, beige Topshop pants, and beige Jil Sander cardigan.