There's a new pair of K-Pop siblings in town, and they're none other than Co-Ed's Taewoon and Block B's Zico! On July 16th, Zico updated his Twitter with a childhood photo of him and his older brother. As the caption, Zico wrote, "Brothers have gotten older." Fans already know that Taewoon was initially a member of Blockbuster before he moved to Core Contents Media and debuted under Co-Ed. Chanmi playfully commented, "Kyak >< So cute!!!!!!  Such chubby little babies* I can recognize Jiho, but who's the person to the right of him?..." She later added, "Hahaha, Taewoon oppa grew up so well ^^." Fans commented back, "Absolutely adorable," "Lovely!", and "They're both still just as cute." Check out some of their other childhood photos below! [gallery link="file" order="DESC" columns="4"] Source + Photos: Zico's Official Twitter (@ZICO92)