The K-pop industry is known for its scrutiny of appearance, but Yoo Jeongyeon’s journey has become one of the most inspiring transformation stories in recent years. After retiring from activities due to serious health issues, the TWICE member made a remarkable comeback, stunning fans with a completely revamped image in early 2026.
During her debut years, Jeongyeon stood out with her unique tomboy charm that balanced elegance and spunk. With her tall figure, long legs and striking visuals, she has often been praised as one of TWICE’s most attractive members. However, at the height of his growing fame, unexpected health complications changed everything.
In 2020, Jeongyeon underwent surgery for a herniated disc in her neck. As part of her recovery, she was prescribed high-dose steroids to reduce inflammation. While effective for treatment, the drug led to serious side effects, including Cushing’s syndrome which caused rapid weight gain, swelling, and noticeable changes in her appearance.
At the time, fans expressed concern and support, but harsh comments from some netizens also emerged. Criticism over her weight and changing appearance has created enormous pressure, especially in the highly competitive K-pop environment. The emotional burden led her to take more breaks to focus on both physical and mental recovery.
Fast forward to 2025 and early 2026, Jeongyeon has made a powerful comeback. Appearing in TWICE’s latest activities, she shocked audiences with her revamped images, leaving many stunned and wondering: “Is it really her?”
The effects of the drug-induced swelling had disappeared. Instead, Jeongyeon reappeared with a slimmer figure, radiant energy, and a refined sense of style. Her soft brown hair, elegant fashion choices, and doll-like beauty quickly trended across all online platforms. More importantly, his confident look, once dimmed during his difficult period, has fully returned.
Public opinion has changed radically. Korean netizens praised his resilience, with comments highlighting his dedication and growth. Many fans have expressed pride not only in his improved appearance, but also in his strength in overcoming adversity without resorting to extreme measures.
What stands out most is Jeongyeon’s renewed sense of self. She openly shared that her recovery journey taught her to prioritize health and self-love over industry expectations. His transformation goes far beyond physical change: it represents resilience, maturity and a powerful return.
Born in 1996 in Suwon, South Korea, Jeongyeon comes from a prominent family, with her father a former presidential chef and her sister, Gong Seung-yeon, an accomplished actress. She joined JYP Entertainment in 2010 after passing an open audition and trained for five years before debuting.
In 2015, he competed in the survival show SIXTEENsecuring third place and officially debuting TWICE on October 20th. Since then, he has contributed significantly to the group’s global success with hits such as Cheer Up, TT and Feel Special. As the group’s lead singer, Jeongyeon has always been recognized for her stable voice and distinctive charming qualities which now shine even brighter after her inspiring comeback.
Sources: K14
