mini-me

Etymology
From, later popularised by the name of a character in the comedy spy film  (1999).

Noun

 * 1)  A person who is a miniature, but otherwise identical, version of a particular person.
 * 2) * 1999, Tony Karon, Time, (headline), 9 Aug 1999:
 * Now Boris Yeltsin Has His Own 'Mini-Me'.