Naomi Watts plays a different side of the people's princess in the trailer for "Diana" — the version that the world so rarely got a glimpse of.
The movie follows the most famous woman in the world falling in love with heart surgeon, Dr. Hasnat Kahn (Naveen Andrews) at the end of a life cut far too short.
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The film, which spans the final two years of Princess Di's life, also chronicles her personal campaign against land mines.
"Diana" comes out Sep. 20.
Watch the trailer:
