Hmmmm. Well there may be a few…
X-Men - Rogue (obviously, and so cliché.) Mainly for her figure in it, she had a great one! although she was a cartoon/drawing. Le Shame.
Game of Thrones - Sansa & Cersei. Not so much for the style of the clothing they wear, but I know that the majority of the accessories they wear are haute couture labels, and usually in season trends. Which I think is awesome that the stylists slide them in there.
90210 - You probably can’t class this as a fandom, but hey… I’m a fan of it. And I absolutely love Jessica Stroup & Shenae Grimes style and fashion on and off the show. <3 Shenae Grimes hair.