"This time last year The Duke and Duchess attended a special effects workshop while on their royal tour in New Zealand!" the caption continued.
According to People, the photo was from their visit to the Courtenay Creative to learn about how the training facility is providing young people with the tools to excel in the film industry.
In the photo, the Duke and Duchess of Sussex appeared to be surrounded by characters in elaborate costumes.
Halloween is a special time for Prince Harry and Meghan, as they celebrated it together just a week before their relationship went public.
According to Hello, Harry flew to Toronto to spend time with his future wife while she was filming Suits at the time.
The couple reportedly attended a Halloween party together, where Meghan shared a photo of herself hiding behind a pumpkin.
Three years later, the royal couple now has a 'pumpkin' of their own.