Wallace & Gromit’s Children’s Foundation will launch its annual Wrong Trousers Day on 29 June.
Workers in the UK are being asked to pay a pound to swap their normal work attire for unusual legwear, or “just something wrong”.
The national charity aims to raise £1m to improve the quality of life for children in hospitals and hospices throughout the UK.
Nicola Masters, director of Wallace and Gromit’s Children’s Foundation, said: “A million wrong trousers means £1m for sick children in the UK.
“Team up today and get your kit on this Wrong Trousers Day on 29 June, and help us reach the magic million for the kids who need it most.”