Update: Collect the pieces of your heart and start gluing them back together, internet. She says it's not true:

Incest is pretty integral to the plot of Game of Thrones, but the brother-sister relations have always been fictional—a fact that's apparently a big disappointment for the producers of the show.

[Alfie Allen models the latest fashions in London (after partying with Tara Reid!), Jan 7; image via Bauer-Griffin]