Interesting subject...
I've found it's not only physical looks (whether man or woman) that is always the factor for attraction, but also how they carry themselves, talk, express creativity, have a sense of humor, have a unique outlook on life.
Have you ever seen a person, who although looks-wise didnt flick your bic, but people flocked to them? I certainly think this is a type of 'aura' a person gives off. If they are positive, kind and warm, they will attract people like flies to honey.
Look at Mona Lisa. She has been called one of the most beautiful women. People will even say 'well she's no Mona Lisa.' I hope not!!! If there was a woman looking like Mona Lisa today, she'd be washing windows with a newspaper at the corner highway.
I do agree, however, that the idea of 'true beauty' has gotten very watered down. Any person off the street with a little lip injection, fake boobs and some makeup is touted on the cover of People magazine as Beautiful. There has to be more. Of course this is just my opinion, but I find celebrities attractive moreso when I see how they try to help others. Susan Sarandon has always been politically active, though I dont always agree with her stances. She seems to exude life and happiness. So do many others that alot of people would consider 'middle aged', but personally, I think they are the best.