Kim Go Eun surprised fans with her glow-up as she took a trip down memory lane, sharing a glimpse of her childhood.
The actress wowed her 5.2 million followers with never before seen photos during her teenage years.
Kim Go Eun Instagram Features Adorable Photos of the Actress during the Cyworld Era
In a series of posts, the "Goblin" star mentioned that she had successfully recovered her Cyworld account.
It is basically a Korean app equivalent to MySpace or Friendster, which were so famous back in the early 2000s.
Interestingly, fans gush over her adorable throwback photos featuring her family and the time when she was attending Kaywon High School of Arts.
Ever since she was in her teenage years, the actress liked to do silly poses in front of the camera.
READ MORE: 'Yumi's Cells' Season 2: Kim Go Eun, GOT7 Jinyoung Draw Excitement in New Trailer
As of this writing, Kim Go Eun's Instagram rakes over 109,000 likes and thousands of comments, most of fans lauding how she looked super adorable.
"Hospital Playlist" actress Ahn Eun Jin even commented, "It is so pretty and cute. I remember all the red pants and red bag."
Her latest IG post comes ahead of her upcoming K-drama.
Kim Go Eun Returns in 'Yumi's Cells' Season 2
The 30-year-old star will reprise her role as the titular character, Kim Yumi, who is an ordinary office girl but lives an extraordinary life.
The show is helmed by Lee Sang Yeob and penned by Song Jae Jung, Kim Yoon Joo, and Kim Kyung Ran. They also worked behind the first season. The highly anticipated sequel will follow the continuation of Yumi's love journey.
To recall, the first season featured Yumi's love line with Goo Woong, played by Ahn Bo Hyun.
Viewers witnessed how Yumi, alongside her primary cell, got over with a traumatic breakup because of Goo Woong.
Unfortunately, because of some unfavorable circumstances, the couple decides to continue their lives separately, with Goo Woong giving Yumi the "break up" card.
As her story continues in "Yumi's Cells" season 2, fans get to see Kim Go Eun with a new male lead.
She is teamed up with GOT7's Jinyoung, who also appeared mid of season 1, playing the role of Yumi's officemate Yoo Bobby.
As seen on the still cuts released by TVING, Kim Go Eun and Jinyoung exudes undeniable chemistry, stimulating viewers' curiosity about their budding romance.
"Yumi's Cells" release date is scheduled to hit the small screens on June 10 via tvN and iQiyi for subtitles.
Kim Go Eun Stars in 'Little Women'
Besides "Yumi's Cells" season 2, Kim Go Eun stars in a back-to-back K-drama as she headlines the upcoming K-drama "Little Women."
She took on the role of Oh In Joo, the eldest sister of Nam Ji Hyun and Park Ji Hoo from "All of Us Are Dead."
The trio will also be joined by "Squid Game" star Wi Ha Joon, Uhm Ji Won, and "The Penthouse" villain Uhm Ki Joon.