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If you want to know, in my set visit report I referred to seeing a piece of armor being created for a character we all know and love. Simon Brindle, the head of the costume armor department, informed me it was intended for Tyrion, and so is presumably part of this ensemble.
The interesting thing here is that they don’t seem to have gone with Tyrion’s armor being quite the mismatch of salvaged pieces that is described in the novel. It all looks to have been more-or-less sized to him.