It's not just Sunny that's taking the celebration to Instagram to thank fans, Girls' Generation's Tiffany joined the bandwagon on Friday.

In the picture, Tiffany has her long hair down and is making various poses at the camera. She is wearing a stage outfit that reveals her sexy shoulders.

"Lion Heart, 10th win," she captioned under her photo.

Girls' Generation appeared on Mnet "M! Countdown" on Thursday and performed their song "Lion Heart." They won first place with the song on this day, winning their tenth trophy with the song.