Maybe we should compile a list of pornstars that appeared in GOT.
AFAIK:
Sahara Knite - training how to simulate orgasm for Littlefinger, in a lesbian scene with Esmé Bianco (1.07, "You Win or You Die")
Masie Dee - one of the two whores that Tyrion gave to Joffrey. She does a short lesbian scene with Ros (Esmé Bianco) before Joffrey orders Ros to spank (and probably mutilate) her. Ep 2.04
Any others?
And of course Shae ( Sibel Kekilli ) who was a german pornstar as Dilara , Kim or Sybel : http://www.iafd.com/person.rme/perfid=Dilara/gender=f