Cards representing mirroring or reflection?

What cards or card combinations would represent taking on the characteristics of another, mirroring appearance and behavior... that sort of thing?
I was thinking of the 2 of cups, some decks literally show a mirror. Another might be the Moon, because it reflects the light of the Sun and these cards sometimes show the moon's reflection in a body of water.

Do you mean like a mime? I'd think the 2 of Swords Rx & the Knight of Cups Rx, or any card that not only has a mirror, but a reflective substance, like water. Keep in mind that reversals can also apply to uprights; that would be purely intuitive on your part.

I was thinking more of how some couples or friends start looking alike (clothing, mannerisms, etc)... maybe a better word would be emulation.
A notso positive example would be that movie Single White Female, but that isn't where I am hoping to go with my line of questioning.