Are you asking if there is an infomercial market company who creates videos or are you seeking a company to assist you with marketing your designer clothing line. Either way, I know of a local company who has made quite a bit of money off of infomercials. The company is called, Big Happy Hair and they are the designer and distributor of a product called a "bumpit". It makes ones' hair stand a little taller on the head. Anyways, if you look them up, they may have some answers for you in regards to who their production company is and how they distribute their hair products/accessories. The market is quite similar, hair accessories, and fashion clothing.
Source: http://www.bighappyhair.com/