Don't know the model, but the pictures were obviously taken somewhere near either Santa Barbara (most likely) or Malibu--which makes me think that the model lives somewhere near the Los Angeles area--or did in the past.  They might have been taken at the old J. Paul Getty Museum near Malibu.

She's a model named Carolyn Bolin.  You can find her at www.carolynbolin.com.

She doesn't escort.