Not a fan of fake breasts but they're a fact in porn/adult modeling/glamour modeling and are becoming more and more common. Some women who don't need them, get them thinking it will give them a boost in confidence and popularity. As for scars, not a turn on at all. In fact, it shows the lack of quality by the doctor who performed the surgery more than anything. Jigsaw nipples and obvious scars along with nipples too high on the breast all point to a botched boob job to me. Nothing worse than seeing "frankentitties."
However, to each their own. Plenty of video and pictures to go around for everyone. To me, in all honesty, it takes more than 2 silicone implants to make an actual porn "star" versus just being in porn. Personality goes a long way, and that shows through in everything.