# STAYC's Sieun Shares New Photos, Fans Worry She Looks Too Thin

- URL: https://hallyu-brief.vercel.app/en/news/stayc-sieun-recent-photos-fans-worry-thin-5c0101
- Published: 2026-10-15T10:11:38.978Z
- Publisher: Hallyu Brief

> STAYC member Sieun posted a series of photos on October 12 that drew both admiration and concern from fans. Many online users said she looked very thin and urged her to eat well. The photos showed her riding a bicycle and relaxing with vinyl records at a music café.

## Key points

1. STAYC's Sieun posted new photos on October 12 with a caption about her hobbies.
2. Fans praised her looks but said she appeared very thin.
3. Sieun is the daughter of singer Park Nam-jung and started as a child actor in 2014.

STAYC member Sieun drew attention on October 12 after sharing a set of new photos on her social media account. The post included the caption "What could my hobby be?" and showed her riding a bicycle and listening to LP records at a music café, according to Newsen.

## What did Sieun post?

In the photos, Sieun wears a light blue halter-neck blouse, white short pants, and a ball cap. The outfit and relaxed setting gave the post a casual, summery feel.

## Why are fans concerned?

While many commenters praised her appearance, others focused on how thin she looked. Comments on her shoulders and arms ranged from "she's too thin" to "please eat." The reactions reflect a wider pattern in which fans of K-pop idols often raise health concerns when a member appears noticeably slim.

## Who is Sieun?

Sieun is the daughter of singer Park Nam-jung. She began acting as a child in 2014 with the EBS children's drama *Pluto Secret Society*. She later appeared in *Six Flying Dragons* and *Beautiful Gong Shim*. In November 2020, she debuted as a member of the girl group STAYC.

## For international fans

Sieun's acting work includes several family-friendly dramas aired on Korean broadcasters, so international viewers interested in her early career may find them useful to look up. STAYC's music is available on major streaming platforms in many countries.

## FAQ

### When did Sieun post the new photos?

Sieun posted the photos on October 12, according to Newsen. The post included several images and a caption about her hobbies.

### What was Sieun's debut year in STAYC?

Sieun debuted as a member of STAYC in November 2020. She had previously worked as a child actor.

### Who is Sieun's father?

Sieun is the daughter of singer Park Nam-jung. Her family background is often mentioned in coverage of her career.

## Sources

- [Newsen](https://m.entertain.naver.com/article/609/0001177941)

_Written and translated with AI from official announcements and Korean media reports. If something is wrong, please let us know._