If you look at model agency sites the prettiest models often only do solo or girl girl. There is though nothing new about this. Pretty performers have always had more offers of work hence the less pretty have had to be more extreme to to catch the eye of directors.
This though is starting to slowly change. There is now less work so new female performers are going straight to hardcore. Many also take Sasha Grey as their role model. Pay for girl girl scenes is also less than for the range of boy girl scenes. So why do some girls in the business now still stick to only doing girl girl?
Those girls who only do girls