All of that sounds great.  It would be a monumentally expensive endeavor(look at the bodies of two of Everden's high society in Duncan and Gideon and compare it to what you just described) so it would have to be a member of the Royal Family, probably someone who's pretty close in line for the throne(not that succession matters when the queen is immortal).  It's also possible that both this child facsimile and their "parent" are a great deal older than either appear.  The specifics are up to you, though.  

I'm okay with pictures, but I may ask you to change it if it's not in keeping with the style of artifice that I have in mind.  I am not okay with anime, sorry to say.  

I do want to say that no metal can simulate the look of flesh, and even silver, though it would be soft to the touch and give like skin, would still feel cold and smoothly metallic.