Girls do not be fooled by pornography. Porn tries to appeal to the widest base and so it reduces a women's sex appeal to exaggerated cartoonish proportions to appeal to the lowest common denominator. Guys that want to be seen with porn star types in real life are generally not very intelligent.
It's like comparing McDonald's burgers to a silver service restaurant. Sure you'll eat the McDonald's and it may even seem like a fun idea at the time, but it's cheap, tacky, overloaded with sugar (big fake boobs), overloaded with salt (peroxided blonde hair extensions), so it lacks all nuance and fails to really satisfy for any extended length of time. It's a cheap thrill (describes porn exactly doesn't it?).
I am currently seeing a girl with fakies, C-size, (first time for me) and I avoid touching her breasts now, because the whole time I am consciously feeling for what feels like the waterballoons under her skin and thinking about it makes me feel uncomfortable. Also, they do not have an equal consistency (even she says this and is going back to get them "fixed") and I am constantly trying to sense the difference, it completely detracts from the sexual experience. I do not rate fake breasts, unless she has absolutely nothing (don't like the 10 year old boy look).