Hey OP, i filtered the search result dates on google from 1998-2002 and i found some websites discussing looks mattering
https://forums.studentdoctor.net/threads/influence-of-physical-attractiveness.54562/
http://www.telegraph.co.uk/news/uknews/1375646/Why-tall-good-looking-people-rise-to-the-top.html
http://news.bbc.co.uk/2/hi/talking_point/288909.stm
http://abcnews.go.com/2020/story?id=123853&page=1
http://legacy.jyi.org/volumes/volume6/issue6/features/feng.html
http://www.bluelight.org/vb/threads/73605-Why-are-women-attracted-to-men-who-are-assholes
^ On this forum they are discussing how good looking assholes get girls and ugly nice guys dont.
I'm going to try older search engines and do 1993-1997 and see what results i can get.
I tried other search engines and they didnt have a filtering search result. Not sure how else i can find looks theory topics from the 90s