La Belle Verte (Coline Serreau, 1996)

Translated from http://fr.wikipedia.org/wiki/La_Belle_Verte:

Somewhere in the universe a planet exists on which the inhabitants have evolved to be happy and live in perfect harmony with nature. Every now and then some of them make a trip to another planet, but strangely, for 200 years now, nobody wants to go to planet Earth. Until one day, one woman for personal reasons decides to volunteer, and thus the earthlings see her land in the middle of Paris.

Subtitles here:

http://www.opensubtitles.org/en/search/sublanguageid-all/fulltextuseor-on/fixinput-on/idmovie-21256