Clever use of the word “nudity” to get me to click on my first-ever Game of Thrones discussion topic. 
Since I don’t watch or follow the show, I am probably missing many important details but, from the context clues I was able to pick up on in the other thread, it seems to me that @SenorBeef’s representation of the situation as:
… is false. ISTM that a more accurate representation of the situation is that Ms. Clarke signed a contract that obliged her to do nude scenes, and she fulfilled the terms of her contract in good faith. And then, the contract obliging her to do nude scenes expired, and she didn’t want to do it any more. But, the show continued to be on the air, and the producers wanted to bring her back. Which meant that it was time to sign a new contract. At which point, she got her new contract to stipulate that which she had the leverage to negotiate, just like everybody else walking the earth.