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From the pictures Hyomin shared on Instagram, it looks like she had a complete ball! The star holds up balloons shaped into the alphabets 'H' and 'M,' and smiles shyly out from a cardboard cutout in the shape of an Instagram post that has nearly 20 million likes! 

Hyomin thanked the fans for celebrating her birthday with her, writing, "Thank you for [wishing me a happy birthday]," right on her Instagram.  

Happy 27th birthday to Hyomin! 

A photo posted by Hyo??in (@hyominnn) on May 29, 2016 at 8:09am PDT

A photo posted by Hyo??in (@hyominnn) on May 29, 2016 at 8:08am PDT

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A photo posted by Hyo??in (@hyominnn) on May 29, 2016 at 8:07am PDT

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A photo posted by Hyo??in (@hyominnn) on May 29, 2016 at 7:56am PDT

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A photo posted by Hyo??in (@hyominnn) on May 29, 2016 at 7:53am PDT