The adorable Cambridge kids weren't the only ones to get on board, though. Several celebrities have also taken to social media to show their support, from Rod Stewart to Rachel Weisz. Scroll down to see who else is showing support.
The Cambridge kids are sending a sweet thank you to all of the first responders helping combat coronavirus. Kensington Palace shared an adorable video of all three of Kate Middleton and Prince William's children - Prince George, Princess Charlotte and Prince Louis - showing their gratitude to the doctors, nurses and emergency workers tirelessly fighting on the front lines.
"To all the doctors, nurses, carers, GPs, pharmacists, volunteers and other NHS staff working tirelessly to help those affected by #COVID19: thank you," read the post's caption followed by the hashtags, "#ClapForOurCarers #ClapForCarers #ThankYouNHS #ClapForNHS."
The video was part of a campaign launched in the UK, which sees people take a moment to show appreciation to those working to stop the spread of the virus.