Rare footage of Elizabeth II meeting Marilyn Monroe, as found from Vanity Fair:
The two met at the premiere of The Battle of the River Plate in London’s Leicester Square. Monroe was there to accompany her then husband Arthur Miller. In the video, you can see her in the receiving line of guests waiting to shake the young Queen’s hand.
At the time, both Monroe and Queen Elizabeth II were just 30 years old. The Queen had ascended to the throne at the age of 25 following the death of her father, King George VI. Monroe had just finished filming The Prince and the Showgirl in London; the film premiered in June 1957.