Ah so glad that there is a thread - haven't seen the show yet, but been an avid reader of the books all summer (Up to Dance with Dragons now)
Haven't decided what character I fancy doing exactly, but definitely am planning on a cosplay from the series in the upcoming future.
Future/In Progress Cosplays:
Margaery Tyrell::Game of Thrones||Sansa Stark::Game of Thrones ||King Canute::Vinland Saga || ? ::Once Upon a Time