The Prince of Wales and the Duchess of Cornwall will attend a star-studded dinner for supporters of the British Asian Trust.
Leona Lewis is expected to perform at the event which is to be hosted by comedian and actor Sanjeev Bhaskar.
Charles and Camilla will join 450 dinner guests at the Natural History Museum – including stars from the world of film, TV, music and sports – to support the work of the charity.
The prince, who is president of the trust, founded the organisation in 2007 to take action against the widespread poverty and hardship he saw in south Asia.
Since then it has supported programmes in education, livelihoods, mental health and anti-trafficking, and has made a difference to the lives of more than three million people in the region.