The Duke and Duchess of Sussex have teamed up with the Duke and Duchess of Cambridge for a TV advert.
The royals narrated an advert to promote an NHS campaign tackling Britain's mental health issues, Every Mind Matters.
The ad, which will air tonight at 8:45pm on ITV, Channel 4, Five and Sky, features Meghan, Harry, William and Kate speaking about the ways Every Mind Matters can help improve people's mental health.
The advert features which features TV presenter Davina McCall, Katie Piper, GBBO's Nadiya Hussain, Gillian Anderson, Glenn Close, rapper Professor Green and Top Gear host Freddie Flintoff.
William starts the video saying: "Everyone knows that feeling, when life gets on top of us.
"All over the country, millions of us face challenges to our mental health - at all ages - at all intensities, and for all sorts of reasons.
"We feel stressed, low, anxious, or have trouble sleeping. Me, you..."
Harry continues: "...your brother, your mother, your colleague, or your neighbour. Waiting, wondering, hoping, hurting.
"We think there's nothing to be done. Nothing we can do about it
Everyone knows that feeling, when life gets on top of us.
Meghan then says: "But that's so wrong. There are things we can do. 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."
Kate continues: "It will 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."
William concludes: "We can all benefit from taking simple steps to look after our mental health."
Health officials hope the advert will encourage others to manage their symptoms to improve mental wellbeing.
Health Secretary Matt Hancock said: "Every Mind Matters will benefit us all with an accessible tool to help manage our wellbeing at the click of a button.
"It draws together the importance of treating our mental health on an equal basis to our physical health, and treating it both as an asset that each individual needs to invest in, supported by the NHS and by the government, as opposed to just something that just needs to be fixed when it goes wrong."
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