'Birth of a Great Star 2' winner Goo Ja Myung�is looking so good after his 33-pound (15kg) weight loss that a lot of people are wondering if he got work done.�

The singer appeared on the latest 'I Live Alone' as one of Kim Tae Won's guests along with Baek Chung Kang, Son Jin Young, and Lee Tae Kwon. Viewers were shocked to see that �Goo Ja Myung was much thinner than they were used to.�

They commented, "Goo Ja Myung looks so much better now," "15 kg. Impressive," "As expected, it's important to maintain yourself," and "He must've really wanted it."

How does he look?

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Tip: eseul