If Red Velvet members with bobbed-hair, then...

Wendy, Joy, Irene, and Seulgi in the order named!!!

Netizens who saw the pics reacted "quadruplets???", "fit well all" etc.

↓Wendy
 
 
↓Joy

 
↓Irene

 
↓Seulgi

 

 
 ▲Image Source: Online Community