Girls' Generation's Sooyoung cheered on Tiffany's official US debut with "Over My Skin".

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On June 29, Sooyoung posted to Instagram, "Fany's new track that I wanted to be revealed as soon as possible. I know how much she worried and suffered over this. Let me wear a tuxedo on the day you go to the Grammy's. #released in korea today too #overmyskin #choreography is daebak #tiffanyyoung."

She also shared an image of Tiffany's album cover for "Over My Skin', which was released yesterday.

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A post shared by s??????? ???? (@hotsootuff) on Jun 29, 2018 at 2:16am PDT