(CNN)Kristen Stewart certainly resembles Princess Diana.A photo from the upcoming film "Spencer" in which Stewart plays the late royal has been released and it's a good likeness.The film, written by "Peaky Blinders" creator Steven Knight, revolves around a weekend in the life of Princess Diana in which she spends a holiday with the British Royal Family and decides to end her tumultuous marriage to Prince Charles."December, 1991: The Prince and Princess of Wales' marriage has long since grown