During a visit to north Wales, the Duke and Duchess have been talking to young people who have had first hand experience of homeslessness.
This morning, they visited Caernarfon to speak to GISDA, a charity who provide help and accommodation for homeless young people in the area.
It's an issue that is of particular importance to The Duke of Cambridge.
He is a longstanding patron of the charity Centrepoint and even spent two days volunteering with their accommodation services in 2009.
When they were children, Princes William and Harry both visited the charity with their mother, the late Diana Princess of Wales, who was also a patron.
The Duke and Duchess are using their visit to north Wales to highlight work in the region that aims to improve people's mental health and wellbeing.