I am not sure how one can jump to the conclusion that the plastic surgery in question is being done out of pressure to impress people in order to get married. Let’s be dan lkaf zechus as to someone’s priorities.
I know some people who had nose jobs. They all were teenagers at the time, which makes me suspect that it was more a self-image/self esteem thing than to impress others for shidduchim purposes. At least one had it done together with correcting a deviated septum that was causing breathing issues, so it was not purely aesthetic. Don’t know what they told their shidduchim prospects/husbands later on.