Poster design, illustrating a series of Corgis with accessories and attire from the pop art era, each against a monochrome background featuring a contrasting colored dot pattern. Emphasize the accessories with comic-style exaggerated details. The Corgis should display a range of styles and attitudes, from suave and sophisticated to whimsical and quirky, each reflecting a unique aspect of pop art fashion. The background's dot pattern should add a layer of texture and depth, enhancing the retro feel of the composition.