07/02/2015 AT 01:50 PM EDT
Thirty years ago this Friday, Back to the Future came roaring onto movie screens in a souped-up DeLorean and took all of us on an adventure back in time. As it turns out, there was another very special guest who came along for that ride: Princess Diana.
Back in 1985, the royal attended the London premiere of Robert Zemeckis' now-iconic adventure comedy with Prince Charles. Wearing a crushed-velvet gown by Catherine Walker – which has enjoyed an impressive legacy of its own – Princess Diana took in the film and met with some of the cast and crew behind it.