Costumes of Westeros by Region/Houses.
Part One Is Northern Houses
Part Two: House Tully, House Arryn, House Frey, Castle Black and Wildings.
Part Three: House Greyjoy, House Lannister and House Baratheon.
She also has some detailed videos on costumes of some the ladies of Game Thrones and how the their clothes reflect journey throughout the story.
Sansa- I never really noticed the details of Sansa’s Golden Wedding dress. Also like Littlefinger Sansa seems to have a personal sigil Butterfly/Dragonfly.
Here is a mash up of Sansa and Cersei.
She has a video of your boy Joffey.
Top 10 missed GoT Costume facts.
and Finally a Q&A.