While some of them look-alike, for others, it is hard to tell the relationship of the two just by looking at them posing closely next to each other on pictures.
However, their younger brothers' good looks cannot be hidden just like their idol sisters.
Their perfect body ratio and beautiful smile make you wonder why they have not debuted as idols themselves.
Consequently, they sometimes even build a fan base.
Here are some of handsome younger brothers of female idol singers!
1. EXID HANI's younger brother
2. TWICE CHAEYOUNG's younger brother
3. SUNMI's younger brothers
4. OH MY GIRL ARIN's younger brother
5. A former member of 9MUSES Ryu Sera's younger brother
(Lee Narin, Credit= 'ahnhani_92' 'miyayeah' 'choi_s_jun_' Instagram, Online Community)