The left hand and the right hand are 'mirror images' (of each other). = The left hand is the/a 'mirror image' of the right hand.
He's the 'mirror image' [=(more commonly) 'spitting image'] of his father. [=he looks just like his father]
She is worried about what motherhood will do to her 'image' [='reputation'] as a rock star.
(..) and your right hand are mirror images of one another, right? Identical, and yet opposite. Well, so too organic compounds can exist as mirror image forms of one another all the way down at the molecular level. But although they may look the same, they don't always (..)2008 TvShow: Breaking Bad Title: Cat's in the Bag... Season: 1 Episode 2