STAYC's Sieun has set the rumor mill abuzz as fans speculate over potential changes in her appearance, particularly a possible nose job, following the release of recent photos by her fansite.

After a post highlighting Sieun's seemingly altered looks attracted over 141k views on a prominent women's online forum, chatter intensified over her supposed new appearance. The original post questioned, "Why did STAYC Sieun's impression suddenly change? I didn't even recognize Sieun," thereby igniting the ensuing discourse.

The photos that ignited these speculations showed a distinct change in Sieun's looks, particularly her slimmer face and more defined nose bridge, leading some fans to ponder whether the pop star has undergone a nose job.

  When contrasted with her earlier images, fans noticed a significant change, thus fueling further conjecture. As such, these pictures became the epicenter of divided opinions - with a section of netizens hypothesizing cosmetic enhancements, while others dismissed the claims as baseless rumors. Those supporting the nose job theory shared comparative photos of Sieun from the past and present and expressed their bemusement over her possible alteration. Comments such as "She was so pretty since her debut, but after her nose job..." and "I feel like she did nose fillers" cropped up in the discussion.

However, loyal STAYC fandom, known as SWITHs, rallied to Sieun's defense, attributing her altered appearance to her noticeable weight loss and normal changes due to her youth. Fans shared their support with comments such as, "What do you mean plastic surgery? It takes a month to get rid of the swelling and bruise," and "There is no difference, Sieun just got prettier."

The photos sparking these rumors were taken during STAYC's performance at the 32nd Lotte Duty-Free Family Concert, held at the KSPO DOME in Olympic Park, Seoul, on June 16. This concert is an annual K-POP event, hosted by Lotte Duty-Free since 2006, aimed at enticing international tourists.