used as adj., derived from the name of celebrated fashion designer Calvin Klein whose style is that of minimalism and simplicity. Something calvinkleinish describes an object, a place, a concept or a personality of minimum pretense, elegance and style.
The new Italian restaurant has white interior with bare tables, no art and subtle lights. Very chic, very cool, very calvinkleinish.
Did you meet the new executive yet? She wears pressed suits and her hair is brushed back simply. She's really calvinkleish.