Talking to The One Show after her engagement, she revealed how Jack proposed at sunset next to a lake in Nicaragua.
She said: “The lake was so beautiful. The light was just a special light I had never seen. I actually said this is an incredible moment, and then he popped the question, which was really surprising even though we have been together seven years.
“I was over the moon. [It was a] complete surprise. But it was the perfect moment, we couldn’t be happier.”
Eugenie and Jack shared official engagement pictures in January, including a picture of her ring – an oval padparadscha sapphire ring surrounded by diamonds, on a gold band. The ring is a similar shape and design to the Duchess of York’s engagement ring.
The couple will marry in the autumn at St George’s Chapel, Windsor Castle – the same place where Harry and Meghan will marry.