In the one-and-a-half-minute video, William, Kate and Harry reflected on the success of London 2012 with footage of members of the Royal family cheering on Team GB, and a shot of the Olympic flame being carried.
Prince William said: "London 2012 saw this country come alive with a passion for sport. It saw people of all ages, and from all walks of life, join together to support Team GB."
Harry added: "Each member of Team GB will have a unique journey, but they all share the same aim – to deliver the best performance they possibly can."
Kate said: "London 2012 showcased the best of British sport, and we are all so excited to see what can be achieved in Rio."
As the video concluded William told viewers: "We have some of the most passionate supporters in the world, and we can't wait to cheer on our athletes together this time around in Rio." Finally the royals wished Team GB good luck, and Kate said, "We can't wait to watch everyone compete." Harry ended with: 'Let's top 2012. Bring on the Great!'
More from the Express:
'Some 366 British athletes will compete in 23 sports at the Games, hoping they will be able to better the 47 medals won at Beijing in 2008 and make Rio 2016 the most successful away from home territory for Team GB. At London in 2012, Britain won 65 meals, a tally beaten only once before by Team GB at London in 1908, when they won 146 medals.'
All three royals are avid sports fans and relished their roles as ambassadors during the London 2012 games. They attended a host of sporting events and receptions in support of Team GB. Royal aides said the possibility of William, Kate and Harry travelling to Rio was discussed, however, a Kensington Palace spokeswoman told the Express "that the potential danger from the mosquito-born Zika virus had played no part in their decision not to go. They look at the possibility of doing all sorts of things and then don't do them for various reasons. In this case, the Zika virus played no part in their decision".
It would appear William and Kate's portion of the video was recorded during their visit to Portsmouth on 24 July.
Kate wore the £50 Land Rover BAR Replica Pique Women's Polo from Henri Lloyd.
We can also see Kate's Kiki Lauren earrings in the video.
Wishing all athletes competing in Rio the very best of luck!
We also have an update on next month's tour of Canada. Details and early information are beginning to trickle in. An anonymous commenter kindly shared a link to this CBC News story which reports the Cambridges will be in Whitehorse on 28 September:
'They're expected to arrive in Whitehorse on Sept. 28, and spend a day in the territory with the prime minister and his wife, as well as Gov. Gen. David Johnston. Events and activities — not yet announced — will be within "driving distance" from Whitehorse, the email says.
On Wednesday, Yukon government spokesperson Sarah Crane said details in the email are not certain, however, and have changed. "It's unconfirmed and developing," she said, but would not say what has changed at this time. This will be Prince William and Kate Middleton's first visit to Yukon, and their first visit to the North since 2011, when they went to the N.W.T. It will also be Trudeau's first visit to Yukon since becoming prime minister.'
Several readers noted Prime Minister Justin Trudeau and his wife Sophie have young children, should William and Kate elect to take George and Charlotte along, it may be a nice opportunity for both families to get together.
Finally, we are delighted to announce the winner of our Azuni London giveaway is Camilla Andrade who shared the following comment: "I signed up for the newsletter and liked the facebook page! Thank you for this post and great giveaway!" Congratulations, Camilla! If you could be so kind as to email me at firstname.lastname@example.org we'll organise delivery of your jewellery. :)
With thanks to the lovely folks at Azuni for sponsoring the giveaway!