The hit Netflix drama is searching for two new young actors who are convincing lookalikes for the princes during the early Noughties period that will feature in the forthcoming season six.
One of the show's casting associates Kate Bone tweeted a casting call which she called an "incredible opportunity" on Thursday, giving details of what they were looking for.
The casting call notice included some instantly recognisable photos of the princes in their teen years and said that they were considering actors aged between 16 and 21 to play William, and from 16 to 20 to play Harry.
Its that time folks...Prince William & Harry - Season 6. This is an incredible opportunity! Please help us spread the word... pic.twitter.com/nFMSkUdsex
— Kate Bone (@KateBoneCasting) March 17, 2022
It read: "Robert Sterne, casting director of the Netflix series The Crown, is searching for two exceptional young actors to play Prince William and Prince Harry in the next series.
"These are significant roles in this award-winning drama and we are looking for a strong physical resemblance."
The notice also added: "No previous professional acting experience required. We are very experienced in providing a great deal of support for the young actors and their families through what they find is a uniquely rewarding creative process."
Casting is taking place over the next two months with an international search for the perfect princes to star in series six, which will film in August 2022.
Series five is due to begin streaming on Netflix in November, where William will be played by Senan West, the real-life son of Dominic West who will play his dad Prince Charles.
Other cast includes Imelda Staunton as Queen Elizabeth, Jonathan Pryce as Prince Philip, Lesley Manville as Princess Margaret, Elizabeth Debicki as Princess Diana, Olivia Williams as Camilla Parker Bowles and Jonny Lee Miller as Prime Minister John Major.
Watch: The Crown's Emerald Fennell jokes about meeting real-life Camilla for the first time