Calvin Klein created the first mass-market designer jeans collection in 1978.
Calvin Klein introduced designer jeans in 1978, helping move denim from primarily practical workwear and casual clothing into the mainstream designer-fashion market. The collection placed the Calvin Klein name prominently on jeans and presented denim as a fashionable, premium product rather than only a utilitarian garment.
The move was commercially significant because jeans already had broad popularity, but designer labels had not yet fully exploited that market. Calvin Klein’s minimalist styling and highly visible advertising helped establish a model later followed by many fashion houses and specialist premium-denim brands.
This fact is sometimes confused with the brand’s later 1980 advertising campaign featuring Brooke Shields. The 1978 date refers to the launch of the designer jeans collection, while 1980 refers to the much-publicized advertising campaign. They are related milestones but not the same event.