MPHO RANTAO PRINCESS DIANA - celebrated worlwide as the real queen of hearts - is heading for our screens. Her life is a major feature in a new biographical film on the British Royal family.  American actress Kristen Stewart has been cast to play the late Welsh Princess Diana in a film titled Spencer.  Images released to the public show Stewart with an uncanny resemblance portraying the late Princess in a red blazer and a black hat with a veil, with the Princess’ classic blonde feathered bob. https://twitter.com/neonrated/status/1354428951842721793?s=20 The story of Spencer, written by Steven Knight and directed by Pablo…