Game of Thrones may just be t--s and dragons, but some fans get really mad about those t--s when they don't belong to the actress whose face is onscreen — as star Lena Headey learned from the reaction to her decision to use a body double for the show's "walk of shame" scene in the Season 5 finale.

"Some people thought I was less of an actress because I didn't get my t--s out," Headey told Entertainment Weekly. "It was really a bit shocking."

Headey explained that she wouldn't be able to act in an emotionally accurate way while also being naked for the three-day shoot, so she turned that part over to Rebecca Van Cleave in order to focus on the character.

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Plus, because her kids were old enough to hear about the scene, Headey decided going nude would be too much to deal with at home.

Headey added that she had no input in the casting of the younger Rebecca Van Cleave, and that people who assumed she chose someone with a "hot body" to protect her own vanity were wrong.

"As a woman, that drives me mad; the thought I'm like, "Nope! Nope!" [and dismissing nude women] in a room," Headey said. "I genuinely wouldn't. Because none of it is about vanity for me — none of it — otherwise I couldn't do it. It would be a hindrance."

See more of what Headey has to say about the fallout from the season finale, and what's coming up next season — Cersei's not any nicer, which is a huge shock — over at EW.