Oooh, I just got some ideas!!
Dress #1: Enchantment Dress
This dress is what LotGK wears when she enchants Rillian. It should be long and flowy, with a low collar) not low as in immodest, but low as in, not a neck-hugging collar), and it should drape and hang very loosely. She should just flow in this dress, with long, loose hair (< as someone else suggested, I do believe) that is crimped with maybe a touch of curl at the ends. She should wear slippers, but these should not show. The bottom of the dress should flow away from her body where it touches the ground. She will be footless, as I now realize, like a snake. Might have some light brown medieval-style lacing on it. She should be young and beautiful, with deep brown hair (perhaps the slightest tint of red accent to it), and deep green eyes. Maybe she could wear a natural-looking wrath in her hair, or two small braids tying together in the back to make a sort of 'crown', like Lucy and Susan have worn before. The color: woodsy green.
Dress #2: Traveling Dress
This dress should be light and airy, a light green with bunches of extra fabric flowing about behind her (and covering her feet) as she rides. Her hair should fly back behind her, and maybe have a flower of green or white in it.
Dress #3: Queen of Underworld Dress
This dress should be regal and royal, with a much snakier theme coming into play. The collar should be stiff and tall, and she should look altogether impressive and uncomfortable. Again, we do not see her feet. She should look as though she could barely sit down, and her hair should be pulled straight up into one of those ugly (IMO) hairstyles where the hair stands up five feet (exaggerating), curves, then comes over to the back of the head in maybe a roll? This dress should be deep forest-green. Maybe she could wear a sparkly, snakey necklace.
Dress #4: Silver Chair Dress
When LotGK come sin and is angry to see the chair broken, she should be wearing either her Queen dress or something very like it, then magically change into this dress as the children, Rillian and Puddleglum become enchanted. The dress should be sequin-y, sparkly, glittery, and much more fitted (still modest) than the others. The neck should be square, and her feet should be covered in trails of the deep, deep green, glitter-fabric. She should have her hair blend in with the dress, maybe a veil? She should be oh-so-beautiful, but SO snakey too...(I hope you don't mind me stealing your "sparkly" (in the dress material) and "sheer" (in the veil) ideas, Lady Lilliandil)
Could someone talented please draw some things up for me...? (If you've got the time and like my ideas, of course!
)
LoN
BTW, Lady Lilliandil, the shape of your LotGK picture reminds me of a cobra! Nice touch (and scary!)