It's a massive task for any actress to take on.
Naomi Watts is set to play the late Princess Diana in a film about the last years of her life.
What William, Harry and the rest of the royals will think, we just don't know.
Naomi knows just how loved Princess Di was across the world, and therefore what a big challenge the role will be, but she seems ready to take it on.
The 43-year-old actress, who was born in England but raised in Australia, has spoken publicly about her latest project, saying: "It is such an honour to be able to play this iconic role. Princess Diana was loved across the world and I look forward to rising to the challenge of playing her on screen."
The film is called Caught In Flight and will chronicle the last two years of Diana's life, before her tragic death on 31st August, 1997.
No one could live up to the real legacy of Diana - look back at pics of her as a wife and mother in our gallery below.
By Victoria Joy
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