The Duchess of Cambridge has been flying the flag for mental health for years, and on Thursday, Kate attended a very important event in London. As one of the four patrons of The Royal Foundation, Kate was a guest of honour at the Mental Health in Education conference at Mercers' Hall. The event focused on children's mental health, with head teachers and other education experts discussing what more can be done to tackle mental health issues in schools.
Kate, who is a firm believer in early intervention to prevent problems later on in children's lives, looked typically elegant on her day out. The mum-of-three went business chic in a tweed blazer and skirt combo. She was given a warm welcome at the conference, with a number of royal fans waiting outside Mercers' Hall to catch a glimpse of Prince William's wife.
Let's take a look at the best photos from Kate's day out…