This is INCREDIBLE! I'm sort of amazed that there aren't more Brienne cosplayers, because she's such an interesting character. :3
So, you used cardboard?? I can't believe you got the armor to look so realistic on a budget. Brienne is my next cosplay, but I've been trying to decide what material to use for the armor, especially the chestpiece. I've considered cardboard with expanding foam, regular craft foam, cardboard, etc. Do you have any tips on finishing cardboard to make it more sturdy? Did it hold up well at a con?
Congrats again on a wonderful cosplay. You look tough and (uncharacteristically ) beautiful and SUPER in-character.