Princess Diana: My Sister’s Story poster
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Princess Diana: My Sister’s Story

202629mMovieDocumentary

In this UK exclusive, Laura Kuenssberg interviews Earl Spencer after explosive new revelations in his latest book about his sister, Diana, Princess of Wales, her marriage to the now King, her tragic death and the lasting impact on her children, Princes William and Harry.

Where to watch

Expected on OTT
around November 8, 2026

Released in cinemas on September 20, 2026. A prediction based on the typical 6–8 week theatrical-to-streaming window — not a confirmed date. Get the WhichOTT app to be notified the moment it lands.

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Cast

LKLaura Kuenssberg
Laura Kuenssberg
Self
CSCharles Spencer
Charles Spencer
Self

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Princess Diana: My Sister’s Story — streaming FAQ

Which OTT platform streams Princess Diana: My Sister’s Story?

Princess Diana: My Sister’s Story isn't streaming anywhere in United States yet.

Is Princess Diana: My Sister’s Story on Netflix?

No, Princess Diana: My Sister’s Story is not on Netflix in United States as of September 2026.

Is Princess Diana: My Sister’s Story on Amazon Prime Video?

No, Princess Diana: My Sister’s Story isn't on Amazon Prime Video in United States right now.

Where can I watch Princess Diana: My Sister’s Story for free?

Princess Diana: My Sister’s Story isn't streaming in United States yet, so there's no way to watch it free at the moment.

What is the OTT release date for Princess Diana: My Sister’s Story?

Princess Diana: My Sister’s Story hasn't started streaming in United States yet. Based on the typical 6–8 week theatrical-to-streaming window, we estimate it will arrive around November 8, 2026. This is a prediction, not a confirmed date.