She wore an aqua shalwar kameez - a traditional Pakistani outfit comprised of a flared kurti, a long shirt, and pants - by British designer Catherine Walker, who also made clothes for the late princess. Add Royal Family as an interest to stay up to date on the latest Royal Family news, video, and analysis from ABC News.
They will be taking part in a five-day tour of the country. She also made several private visits in later years to help Khan - then a cricketer-turned-opposition politician married to her friend Jemima - raise money for a cancer hospital in Lahore.
Continuing with the theme of education, the duke and duchess will join children from three local schools at the Margalla Hills, which sit in the foothills of the Himalayas.
The Duchess of Cambridge wore New Look heels to visit a school in Islamabad. Security arrangements for their arrival are already in place.
They are expected to see Pakistan's efforts to combat climate change and learn about the "complex security" of the region, among other issues, a statement from Kensington Palace said earlier this month. They were scheduled to attend a cultural event later in the day.
The National Monument is all lit up, providing a attractive backdrop for the setting of the reception, hosted by the British High Commissioner to Pakistan Thomas Drew.
The Duke and Duchess of Cornwall in Pakistan in 2006.
The couple has been going on official tours together since their royal wedding in 2011 (learn why Prince Charles called his son and his daughter-in-law "tasteless" on their first tour) and these days, they're professionals when it comes to visiting countries in the Commonwealth.
Kate Middleton often uses her sartorial choices to honor the host country.
It comes as Britain seeks to reinvigorate its foreign relationships as the deadline looms for its departure from the European Union, while Pakistan works to fix its global image to boost tourism and investment.
William and Kate were greeted by Pakistan's foreign minister, Shah Mehmood Qureshi, and his wife at the Pakistani Air Force base in Rawalpindi, near Islamabad, on Monday evening.