In September of 1997, seemingly the entire world reeled with shock over the news of Princess Diana of Wales’ death in a car accident. Even after she ended her supposedly fairy-tale marriage to Prince Charles, Diana remained a beloved world figure and an active proponent of various humanitarian causes.

Nonetheless, Diana was such a ubiquitous media draw that she spent much time hounded by and attempting to avoid paparazzi – especially when she began romantic relationships with heart surgeon Dr. Hasnat Khan and Egyptian billionaire Dodi Fayed. Her struggles with the effects of fame on her life and relationships during the final two years of her life are chronicled in the upcoming biopic Diana, which has released a new preview.

Diana is directed by Oliver Hirschbiegel (Downfall) from a script by Stephen Jeffreys (The Libertine). Naomi Watts (The Impossible) headlines the project as the titular princess. She is joined by Naveen Andrews (Lost) as Hasnat Khan, as well as Douglas Hodge (Robin Hood), Cas Anvar (Argo), and Charles Edwards (Downton Abbey).

This newest, internationally focused trailer certainly gives audiences a better idea of what to expect from Diana than its initial teaser. Perhaps most surprising is the heavy focus on the budding romance between Diana and Dr. Khan – a pleasant surprise to be sure, because Naveen Andrews is a solid actor who could use the kind of exposure a prestige biopic can provide.

Of course, the big draw here is Watts as Diana herself – a performance that is difficult to judge from the trailers and will likely be inscrutable right up until the film opens. Will Diana bring her Oscar gold at last? We’ll have to wait until later this year to find out.

Diana will enter UK theaters on September 20th, 2013. There is still no firm US release date for the film, though it will likely appear before the end of 2013.