LONDON, ENGLAND - MARCH 14: Prince William, Duke of Cambridge, Catherine, Duchess of Cambridge and Prince Harry attend the Commonwealth Observance Day Service on March 14, 2016 in London, United Kingdom. The service is the largest annual inter-faith gathering in the United Kingdom and will celebrate the Queen's 90th birthday. Kofi Annan and Ellie Goulding will take part in the service. (Photo by Samir Hussein/WireImage)
Royal family fun!
Kate Middleton, Prince William and Prince Harry are the stars of a newly released video promoting their latest charity campaign, Heads Together, which aims to end stigmas surrounding mental health.
"Mental health is just as important as physical health," Kate, 34, said in the clip, to which Harry, 31, added, "We can all play our part by talking and listening to each other and helping each other find support."
The best part of the video? At the end, the trio — clad in matching, blue Heads Together headbands! — try to take a "serious" photo for the campaign, but can't stop laughing!