I had lived in korea, seoul for quite some time last year. And basically, it is really interesting to know the fashion & 'PS' trends.
Living at their heartland zone, I discovered that the people on the common street looks really common and they are facing an aging population. To be frank, they look really typical korean, as in fair skin, tiny eyes. Not too impressive.
Wondering.. where are all the superstars lookalike?? On the heartland zone street, our regular singaporean youths look tons better than their youth.
Venturing to popular youth places like MyeongDong & Dongdaemun, I am beginning to see the difference. However, they are still relatively average, some good looking ones but they turned out in a small %. I can obviously notice a lot of them had did PS due to their sharp noses. and "enlarged" eyes. But.. they look odd in a way i can't explain.
The places i mention are koreans within the mid-range families.
Seoul is divided into Northern Seoul & Southern Seoul, separated by han gang <Han> Most rich people live in Southern Seoul, namely Apkujung, Gangnam etc.
And now.. for the juice.. local korean friends recommend me to apku jung, Gangnam. (Some forummers have been to that area namely.. BK clinic's situated at gangnam)..
That district (Southern Seoul) is considered to be where all the rich people live. You won't be surprised to see korean stars there like Bae Yong Jun etc. A street full of PS clinics (if i can recall, 200-300 clinics) Joke? No joke.... yes Apkujung...
Walk through apkujung's luxurious shopping centre called Gallerie Shopping Center (Where they sell LV, gucci Range products) Cost more than SG branded goods. Look at the salesgirls, look at the customers walking around, have a big shock =) A parade of super defined faces.
Majority of them look great (Sharp long features and crystal like skin with oriental big eyes). Another place to look out for is Rodeo Street just opposite Gallerie. Yes, more beautiful faces. (Most of them are at their late 20s.)
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"Alright I want to see younger babes/hunks"
Seoul is a "Bu Ye Cheng" <No> Clubs and pubs are open everyday till 6am. Admit it, you will get wasted everyday by the cheap Soju they offer. 1 good bottle costs about $1.60 SGD. Enough to make an average drinker dipsy.
I was exploring from clubs to clubs with some locals and we came to this Hiphop dance club called "Club NB" at Hongdae.
Remember this name. Club NB.
Towards midnight, you will see the most beautiful and handsome Asians you will never find on the street. Apparently, good looking korean youths love to hang out there.
I can easily see some youths way better looking than superstars you see on screen. PSed or not, i don't know, I reckon most of them did PS and its way too perfect and natural that i can't find flaws. Kudos to their doctors, they made the best looking asians there.
In the past, most ppl tend to look upon japaneses as the "best looking" asians around. A japanese friend of mine was travelling with me around seoul and still thinking his country girls are better looking.. However, after that nights' out, he have no doubt that koreans have some of the hottest people there. Similarly, not knowing if they have done PS or not.
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Devil's advocating... On their subway station, i saw strange looking people. example. a nice sweet girl with an ultra high and sharp nose which's definately a turn off to her delicate features.

Plastic surgery commonly seen in our country and taiwan.. Rhino, eyelid, jaw, chin, lipo. Etc.
In korea, listen to this...(Heard from the locals there)
You can do PS on :-
1) Height - Your legs will be broken and cemented to gain that boost of 3cm plus approximately. Terrible way for extended puberty..
2) Muscles - Guys whom crave for 6pac? You can do PS on your tummy for a 6pac. And even on your upper body Bicsep, tricsep, chest. As heard, you can even not go to the gym and have a body of Bae Yong Jun. Insane? I don't know.
One thing for sure, the guys there are really tall and tons muscular than sg guys. (Comparable to Angmor size)
I guess you guys know some of the top Korean actors/ actresses.
They seems to have this PS trend going on.
Example: This actress called Choi Ji Woo is currently famous. And there are many "choi Ji Woo" look alikes there.
Cheers