According to a new book about the future Queen, a royal expert has said the Kate and William made an important promise to each other when they decided to rekindle their romance.
A royal source says William is concerned for his younger brother's mental health, following his admission he's struggling after the screening of a new documentary, Harry & Meghan: An African Journey.
The video, shared to the Kensington Palace Instagram, comes after Kate gave her very first TV news interview since becoming a member of the royal family.