Photos of the unnamed woman uploaded to a Japanese blog, show her with a dramatically tapered chin as a result of jaw surgery, a high-risk procedure which involves re-aligning the jaw and shaving the bone to a heart shape.
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"Someone please tell me this was Photoshopped!" one reader commented on the post, while another quipped that "it looks like you could plow a field with that chin".
Another asked: "Is it really possible to taper someone's chin that much?"
Her eyes also appear bigger, although it is not known if this is the result of another procedure.
The before and after shots prompted fierce debate on a Japanese blog. (Supplied)
The woman, believed to be a reporter with a South Korean TV channel, is not alone, with one in five Seoul women having gone under the knife.
Double eyelid surgery – which reduces skin in the upper eyelid to make eyes appear larger, fat-busting lipoplasty and nose jobs rate among the most popular surgical procedures.
Jaw surgery – once used as a last resort to correct facial deformities – has also become popular in South Korea, where many consider a heart-shaped face, high-bridged nose and big eyes as physically desirable traits.
Earlier this week a chilling photo emerged of a Korean surgeon
keeping parts of jawbones as souvenirs in his office.
The worrying trend has been criticised of late by Japanese beauty bloggers, with one claiming plastic surgery had unintentionally turned the country's Miss Korea beauty pageant into a "clone parade".