The British actress plays exiled royal Daenerys Targaryen in the hit TV show and she sports striking white hair for the role.
However, the actress is a natural brunette and admits fans rarely approach her when she is off-set because they do not recognise her without the wig.
Clarke tells U.K. chat show host Graham Norton, "I looked so different in Game Of Thrones that I am not recognised much, it doesn't really happen. I can walk around fine. I get stopped once in a while and when that happens I am called (character's royal title) Khaleesi and I turn around quicker for that than I do Emilia."
The interview is due to air in the U.K. on Friday (19Jun15).