The US star said she wanted to know more about the work of the organisation founded in 2007 by Charles and a group of British Asian business leaders.
It aims to tackle widespread poverty, inequality and injustice in south Asia.
She said afterwards: “I heard about the work of the British Asian Trust through a friend in India and really wanted to come along to learn more about it.”
The trust has four areas of programme work – education, livelihoods, anti-trafficking and mental health, with a strong track record of investing in solutions that work for the long-term and that can be taken to scale.
The organisation has supported more than four million people in India, Pakistan, Sri Lanka and Bangladesh since its inception.