National Wrong Trousers Day is celebrated on June 19, primarily in the UK, to support children's hospital charities through whimsical attire inspired by the animated film "Wallace & Gromit: The Wrong Trousers." Participants are encouraged to wear unusual or humorous trousers, such as oversized pants or those with fun prints, to bring joy and laughter while raising awareness for a good cause. Activities associated with the day include baking "wrong trouser" cookies, watching Wallace & Gromit films, and engaging in community events organized by The Grand Appeal. Schools and organizations often utilize themed dress-up days as a fundraising tool, providing resources like printable posters and games to promote participation. Volunteering at children's hospitals and organizing toy drives are also common ways to contribute to the spirit of the day. Overall, National Wrong Trousers Day combines fun with philanthropy, aiming to improve the experiences of young patients in healthcare settings.