Prince Harry and Meghan Markle have just touched down in Columbia for their four-day unofficial royal tour. The unconventional choice of location has raised eyebrows, particularly after the Duke of Sussex has repeatedly refused to return to the UK with his family due to safety concerns in his own home country. However, it's not the first time that one of their trips has caused tension as Harry once issued a stark warning to his now wife, Meghan, ahead of her previous vacation to India during the early days of their relationship.

When the Sussexes first became an item, they were desperate to keep things under wraps from the public to ensure they had as much as privacy as possible. So much so that Harry even urged Meghan to specifically not take one particular photo on her travels just before she embarked on the humanitarian trip with World Vision to promote menstrual health management and education access for young girls. The duke previously confessed how he had begged her not to take a picture in front of India's most famous landmark, the Taj Mahal, for one very good reason.

Writing in his tell-all memoir Spare , the 39-year-old explained how he advised her not to do this in case people thought she was mimicking his late mother, Princess Diana. The former Princess of Wales was famously snapped sitting alone at the famous landmark during a tour of India, with the imagine becoming symbolic of the state of her relationship with the then Prince Charles at the time. However, when .