Recently, fans of second-generation K-pop idols had their nostalgia buttons pressed when a group of their beloved stars reunited for a friendly outing that left everyone smiling and reminiscing.

A handful of iconic second-generation idols, who once took the music industry by storm, decided to come together for a night out.

On September 12, former SECRET member Hyosung posted a set of nostalgic-inducing photos. In the photos, Hyosung is accompanied by four other 2nd generation idols, looking happy and enjoying their time with one another.

T-ara's Eunjung took the selfies with ZE:A's Siwan, SISTAR's Bora, Jewelry's Yewon, and SECRET's Hyosung.

Fans couldn't hide their joy after seeing the most iconic idol group members together again after years.

They gathered in an online community to share this excitement and commented, "Their visuals are impressive...the second generation was legendary," "Eunjung is so pretty," "Bora's style hasn't changed," "Man, I was truly a youth thanks to the second-generation idols, seriously," "Siwan is so dang handsome," "The second generation idols are still pretty and handsome. I'm the only one who aged," "They were so popular during their time," "Never imagined to see them together like this," "I think they met at Siwan's movie premiere," and "I wish they make a comeback."