How should I react to my boyfriend looking at porn?

We've been dating for about 17 months and it's mostly been long distance. I understand a lot of men do it but he is VERY specific to which porn star he is watching (only focusing on videos with sophie dee). This bothers me but not too badly. What really bothers me is that she is the complete opposite of me. I'm slightly overweight with more butt than boob and blonde. He told me that is the type that he finds sexy, yet he's watching videos featuring a 110lbs, very breasty brunette. Should I tell him that if upsets me that he's so focused on this one star and why? Or should I just accept that it's normal?