Someone pointed this out over at the TT forums:
Graham, 1990:
(http://images1.wikia.nocookie.net/__cb20080110160012/kingsquest/images/c/c9/Grahamkq1ega.PNG)
(http://images1.wikia.nocookie.net/__cb20100816224223/kingsquest/images/6/61/GrahamKQ5closeup.jpg)
Errol Flynn, Robin Hood, 1937:
(http://ginchyguide.frequency13.com/wp-content/uploads/2010/01/errol-flynn-robin-hood.jpg)
(http://longislandarcheology.files.wordpress.com/2008/08/annex-flynn-errol-adventures-of-robin-hood-the_nrfpt_04.jpg)
Alexander, KQ6, 1992
(http://queststudios.com/2010/digital/miscellaneous/kq6cd/CDFrontCover.jpg)
(http://images3.wikia.nocookie.net/__cb20100816091358/kingsquest/images/4/4e/AlexanderstandingKQ6.jpg)
Kevin Costner, Robin Hood 1991:
(http://i158.photobucket.com/albums/t97/Lambonius/Robin_hood.jpg)
Valanice, KQ7:
(http://bulk.destructoid.com/ul/85365-the-best-videogame-moms-ever-/Best%20Moms%20Ever%20-%20Valanice-550x.jpg)
(http://images.wikia.com/kingsquest/images/a/a8/KQ7box1.jpg)
Tremaine, Disney's Cinderella:
(http://www.disneyvillains.net/images/tremaine.gif)
Haha! The Robin Hood/Alexander one is actually frighteningly similar. That's funny. :)
Those were all the trendy outfits back then. Duh. Of course the Royal Family would be fashion forward.
The Prince Alexander/Kevin Costner resemblance becomes even more blatant when you look at this costume sketch from the KQ6 hint book, which mimics the Prince of Thieves outfit even more closely.
(http://home.comcast.net/~ervind/kq6alexcostume.png)
(http://home.comcast.net/~ervind/rhpotkc1.jpg)
(http://home.comcast.net/~ervind/rhpotkc2.jpg)
Well look at the similarities between the story of KQ6 and Prince of Thieves too, no surprises there.