There is an American pornstar Naomi Russell,i dont have any pics BUTT(sorry) i have seen a good few of her scenes,She is known for her ass,amazing body and incredible beautiful face.Her ass is incredible but it is a condition to do with the curviture of her spinal cord is why it sticks out.
if you type her name into the search bit on spankwire there is loads of clips of her, wow amazing ass!
if you like her you'll like Alexis Texas, Flower Tucci, Pheonix Marie to name a few, again its all about the porn clips and scenes with these ladies. GODESS'S!! the lot of them! Im building a folder in my profile on here with some of them at the moment Girls with big bums and thick proportionate thigh's FTW
Was a port star a while back called Serena south !!! Best.ass.ever.