Officially, there has been comics versions of a few of Anne Rice's novels, among which "Interview With the Vampire" and "The Vampire Lestat".
Unofficially, there's been a doujinshi (Japanese fan-art comics - or manga, rather) that is even more rare.
And there are the movies, of course.
But all of these aren't always fully enough to picture Armand.
So when I see a young-looking pretty character with wavy auburn hair, I just stop in my tracks and take notes, for future inspiration.
This is one of those (nothing much to do with Armand apart from the looks, though) :
From Sandman's book 8, "Worlds' End", tale "Hob's Leviathan"
Writing : Neil Gaiman
Art : Michael Zulli and Dick Giordano
Character : Jim, the ship's boy who saw the Sea Snake.