Yeah first comment gp rei-chan the first child

its a shame shes not human just a copy stillshes pretty

I'm not convince that Rei is a clone. Ayanami age tells us that she was born 3 or 4 years before Yui died. It unlikely that Gendo would clone his wife when she was alive. I wonder could Rei be shinji sister and Gendo hide her away so that he could use Ayanami for his experiments

no dude shes a clone, ses so in the anime