Meghan Markle and Kate Middleton have gone on very different royal tours in the past month. The Duke and Duchess of Sussex recently returned from Africa, while the Duke and Duchess of Cambridge are currently wrapping up their history-making tour of Pakistan.

However, as different as the two visits may seem, a similarity does exist between them in terms of a specific choice that both members of the British royal family made. What was it?

According to the Sun, Meghan and Kate each made the "strategic choice" to wear green while touring the countries due to the fact that it is seen as a "powerfully symbolic" color in the Islamic faith. It is also believed to have been a favorite of the Prophet Mohammed. Wearing the color was therefore seen as an indication that they were honoring the sites that they were visiting.

READ: Meghan Markle Broke 'Royal Tour Tradition,' Went Against Palace In This Unexpected Way

Additionally, green is also Pakistan's national color, so it illustrated a respectfulness in that way as well when Kate wore it on her current five-day tour of the country.

Royal fashion is always a topic of interest for fans of the British royal family, as was evident during Meghan's time in Africa with Prince Harry. Aside from sharing private pieces of her life with those she encountered while on the trip, she also quietly conveyed a  specific "message" thanks to a certain fashion choice and intentionally decided to forgo her engagement ring for part of the tour.

Kate Middleton, Meghan Markle Catherine, The Duchess of Cambridge stands with Meghan, Duchess of Sussex at Westminster Abbey for a Commonwealth day service on March 11, 2019, in London, England. Photo: Getty Images/Richard Pohle