Prince William, Kate Middleton, Prince Harry and Meghan Markle made a surprising reunion in one project.

Earlier this year, the Duke and Duchess of Sussex decided to have a separate household from the Duke and Duchess of Cambridge. Prince Harry and Markle left Kensington Palace and moved to Frogmore Cottage in Windsor. The first-time parents also decided to start a new charity and left the Royal Foundation that they used to share with the future king and queen.

However, according to People, the fab four have reunited. All four of them decided to work together for a good cause.

“It is a really positive project, and all four of them have been involved,” a royal source told the publication.

“When they heard about it, all four of them were really keen to take part. It is a really positive project, and all four of them have been involved and they hope it will have a huge impact.”

In a three-minute clip launched by Public Health England as part of its Every Mind Matters program, the royals can be heard narrating a spot that stars Gillian Anderson, Glenn Close and “The Great British Bake Off” winner Nadiya Hussain.

Prince William started the voiceover with “Everyone knows that feeling, when life gets on top of us.” After the Duke of Cambridge says, “Me, you,” Prince Harry states, Your brother, your mother, your friend, your colleague, your neighbor,” before adding that sufferers often feel helpless about it as if they can’t do anything about it.

“There are things we can do,” Markle continues. “From today, there’s a new way to help turn things around. Every Mind Matters will show you simple ways to look after your mental health.”

“It’ll get you started with a free online plan designed to help you deal with stress, boost your mood, improve your sleep and feel more in control,” Middleton, who started the successful Heads Together mental health initiative, adds.

Many were saddened when the Cambridge and Sussexes decided to split their charity. Some even questioned the need for split since all the four of them support the same causes.

However, according to palace aides, the fab four will pursue different trajectories. They also denied that the creation of a new charity forum for Prince Harry and Markle was due to a rift or distance between them and Prince William and Middleton.

An aide told Vanity Fair, that the charity started when Prince William and Prince Harry were only in their early 20s and their lives have changed. The split is part of a natural development because there are plenty of work to go around, but the two foundations will closely work together.

Prince William, Prince Harry, Meghan Markle and Kate Middleton
Pictured [L-R]: The Duke of Cambridge, Duke of Sussex, Duchess of Sussex and Duchess of Cambridge arrive at Westminster Abbey to attend a service to mark the centenary of the Armistice on Nov. 11, 2018 in central London. Paul Grover/AFP/Getty Images