While many of today’s K-Pop idols are still in high school, there are numerous stars in the industry who graduated a long time ago—and they still look just as young. Take these 8 female singers, for example. These 30-year-olds may have graduated all the way back in 2010, but they’ve barely aged a day since.

1. Irene (Red Velvet)

Red Velvet‘s Irene graduated from Haknam High School in Daegu, Gyeongsang.

She was already 24 years old by the time she debuted as the group’s leader.

2. Seohyun (Girls’ Generation)

Girls’ Generation‘s Seohyun graduated from Jeonju Fine Arts High School in Jeonju, North Jeolla.

She was still a high schooler when she debuted, graduating several years into the group’s career.

3. Chorong (Apink)

Apink‘s Chorong graduated from Chungbuk High School in Cheongju, North Chungcheong.

She was the only member who was in her 20s when the group debuted.

4. Nana (After School)

After School‘s Nana graduated from Ochang High School in Cheongju, North Chungcheong.

She debuted right at the end of her final year of high school.

5. Eunice (DIA)

DIA‘s Eunice graduated from an unknnow high school in Busan, South Gyeongsang.

She was already 25 years old when she debuted with DIA, but she was meant to debut in Jewelry a year earlier.

6. Sojin (9Muses)

9Muses‘s Sojin graduated from an unknown high school in Gwangju, South Jeolla.

She debuted with her group in the same year she graduated high school.

7. Woohee (Dal Shabet)

Dal Shabet‘s Woohee graduated from an unknown high school in Busan, South Gyeongsang.

She made her debut a year after Dal Shabet’s inception, joining at 22 years old.

8. Hyunyoung (Rainbow)

Rainbow‘s Hyunyoung graduated from Shinkwang Girls’ High School in Yongsan, Seoul.

She made her debut as the group’s maknae a few months before graduating.