Girls' Generation's YoonA is another million rich on Instagram!

The top star recently reached her next million, marking a total of 4 million followers. Back in October of 2015, YoonA set a record as the fastest female idol to gain her first million. Then in just 10 months, the number quadrupled! 

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More and more fans worldwide are keeping up with YoonA! If you are not one of the 4 million yet, then you can start following @yoona_lim.