This item is is a Japanese-language book or magazine devoted to fashion or cosplay ("COStume PLAY"), and may contain actual sewing patterns for creating your own clothing/costumes, as well as photos of completed outfits.
Glossy magazine featuring photos -- mostly of clothing, but some of models wearing it, and some of dolls dressed up in the "gothic lolita" style; lots of punk influence, too. Advertisements for shops abound. 114 pages.