If you're anything like me and my brother, then you would bicker and fight at every available opportunity, until we wanted to do something cool that would force us to work together.
That seems to be the case with these royal brothers, as Princes William and Harry have decided to try their hand at acting in an upcoming film that's sure to be a blockbuster.
Harry has of course been stealing the limelight away from his older brother in the past few weeks thanks to his recent engagement to the stunning Meghan Markle, an actress herself. Perhaps she gave him some acting tips!
With a wedding coming up in 2018, perhaps Harry and his older brother wanted a chance to have a bit of fun before family obligations make it difficult to get a moment alone.
They are both due to appear in the latest Star Wars movie, but you'll never guess what role they were cast for!
The two royal hotshots attended the premiere of the newest addition to the popular sci-fi universe, but they've been part of the production since the beginning.
William says he is a "total Star Wars geek" and that it was a huge delight for him to meet some of the film's cast in their element.
That's why he and Harry must have been overjoyed when they were offered a role in the movie - albeit, a small one.
The two of them play a pair of Stormtroopers, guards to the evil Empire in the movie series. While their helmets and matching uniforms may make them hard to spot, it should be possible since William and Harry stand 6ft 2 and 6ft 1, respectively.
Good luck in your debuts princes! And may the force be with you.