Prince William, Kate Middleton and Prince Harry are tourists in London for World Mental Health Day

Prince William, Kate Middleton and Prince Harry joined forces on Monday, October 10 in London to mark World Mental Health Day, which focuses on mental health first aid and the role everyone can play in supporting loved ones. The royal trio stepped out for the cause to deliver speeches and take a ride on the London Eye.Photo: Nick Ansell PA Wire/Press Association Images

It was a rose printed dress for an English rose. The Duchess of Cambridge stepped out in a new label, Kate Spade for the outing. The chic pink frock features a button up fastening and neck tie detail.Photo: Press Association Images

The stylish royal accessorized her look with her Kiki McDonough morganite and diamond cushion drop earrings and L.K. Bennett clutch bag.Photo: Press Association Images

Meanwhile, Prince Charles' sons looked dapper in button down shirts and suit jackets as they teamed up for the joint engagement.Photo: Press Association Images

Upon their arrival to the event, Kate received a bouquet of flowers from 17-year-old Joanne Sibly, who was chosen to represent Merlin's Magic Wand (a charity which grants wishes to sick children).Photo: Nick Ansell PA Wire/Press Association Images

The Cambridges and Harry took a trip around the London Eye with Heads Together charities.Photo: Doug Peters Doug Peters/EMPICS Entertainment

Prince George's parents crouched down to the ground to talk to nursery schoolchildren after going for a ride on the London Eye.Photo: Nick Ansell PA Wire/Press Association Images

Harry urged the public to stop the stigma surrounding mental health. He said, "It's time we ended the shame around mental health – the fear of judgment that stops people talking or getting help" Photo: Twitter/@KensingtonRoyal

In her speech Kate said, "William, Harry and I feel it is our duty to do what we can, with your help, to shine a spotlight on emotional wellbeing." Photo: Twitter/@KensingtonRoyal

"On the @heads_together journey so far we have seen the difference that a listening ear can make to people’s lives," William said. "The three of us have learnt a lot in the past few months as we have met people," the dad-of-two shared. "The conclusion we are coming to, is that the more we all talk about this, the more collectively as a society we can do to support one another." Photo: Twitter/@KensingtonRoyal