Sulli-Lee Hyun Woo, Big Smiles 'They Look Alike'

f(x) Sulli and Lee Hyun Woo showed off their friendship.

Yesterday, Sulli posted on her me2day, "Jae Hee, big smile with Eun Gyul!" along with a picture.

The picture included Sulli and Lee Hyun Woo, who are currently filming for SBS drama "To the Beautiful You" together.

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Sulli and Lee Hyun Woo both showed their big, innocent smiles.

Internet users who saw this commented, "You're the funniest when you laugh" and "You guys really look alike."

Photo Credit: Sulli me2day