DIA

DIA (다이아), short for DIAMOND and popularly read as the backronym “Do It Amazing,” is a South Korean girl group formed by MBK Entertainment. If you grew up watching mid-2010s K-pop girl groups rise and reshuffle, DIA’s story will feel familiar — and that’s exactly what makes it worth telling. The group debuted on September 14, 2015 with the lead single “Somehow” from its first studio album, Do It Amazing, and because label-mates T-ara shared the same agency, fans quickly nicknamed DIA “T-ara’s little sister group.”

From Survival Show Plans to a Hand-Picked Lineup

Here’s something a lot of casual fans don’t know: DIA almost debuted through a reality survival show. MBK Entertainment first announced a competition format, but the company scrapped it midway and chose the members internally instead. That decision gave us the original seven-member lineup — Seunghee, Eunice, Huihyeon (then “Cathy”), Jenny, Yebin, Eunjin, and Chaeyeon.

A Lineup That Never Stopped Shifting

If there’s one word that defines DIA’s journey, it’s change. You’ll notice the group cycled through nine different members across its run. Seunghee left in 2016 when her contract expired, Eunchae joined that same year, and Jueun and Somyi arrived in 2017 to round out a nine-member era. Eunjin departed in 2018 for health reasons, Jenny followed in 2019 with a knee injury, and Somyi exited in 2022. By the time DIA released its final single, “Rooting for You,” on its seventh debut anniversary, the group had settled into the lineup fans remember best: Eunice, Huihyeon, Yebin, Chaeyeon, Eunchae, and Jueun.

Highlights Worth Knowing

DIA isn’t officially disbanded — members have said the group chat is still active and that they’d be open to reuniting — but the act has been on an indefinite hiatus since September 2022, with each member now pursuing music, acting, or broadcasting under separate agencies. Whether or not DIA ever makes a full comeback, its catalog remains a genuinely fun snapshot of a girl group that leaned into dance-pop energy, self-written lyrics, and a whole lot of member turnover along the way.