Just days after his brother, Prince Harry, spoke about his mental health problems following the death of their mother, Prince William has spoken to Lady Gaga about mental health in a video for the charity Heads Together.
Prince William and Lady Gaga FaceTimed each other to talk about the importance of being frank about what's going on inside your head, with Lady Gaga speaking honestly about her experiences of PTSD and anxiety, which followed her sexual abuse aged 19.
"Waking up every day and feeling sad and going on stage is something that is very hard to describe," she said from her kitchen in Los Angeles. "There's a lot of shame attached to mental illness, you feel like something is wrong with you."
Describing how her symptoms affected her she said: "In my life I go, 'Oh my goodness, look at all these beautiful wonderful things that I have and I should be so happy'. But you can't help if if in the morning when you wake up you are so tired and so tired you are so full of anxiety and the shakes that you can barely think. It was like saying this is a part of me, and it's ok."
Prince William did not reveal whether or not he was one of the 1 in 4 people who have experienced mental health problems, but he said he was keen to find out more about the ways it can affect people, and to bring the conversation to the mainstream.
"It's time that everyone speaks up," he told Lady Gaga. "Just having a conversation with a friend or family member can make such a difference."
He invited the Born This Way singer to join Prince Harry and the Duchess of Cambridge for a Heads Together event when she tours the UK in the autumn.
Michelle Williams has checked into a mental health facility for depression