After weeks of the viral sensation dominating our newsfeeds, you'd think that we'd have seen the best of the celebrity ALS Ice Bucket Challenges. However, the stars of Game of Thrones have totally upped the ante of the freezing cold challenge. And it wasn't just the cast taking on the challenge to strike out the neurodegenerative disease, but author of the series, George R.R. Martin, as well. Watch, below!

1. Sophie Turner (Sansa Stark)

2. Joe Dempsie (Gendry)

3. George R.R. Martin

4. Maisie Williams (Arya Stark)

5. Emilia Clarke (Daenerys Targaryen)

6. Peter Dinklage (Tyrion Lannister)

7. Sibel Kikelli (Shae)

8. Lena Headey, Kit Harington & Nikolaj Coster-Waldau

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