Girls' Generation's Hyoyeon showed off her slender figure.

On May 20, Hyoyeon posted a series of photos on her Instagram. In the photo, Hyoyeon is seen taking a selfie of her own reflection in the mirror, and she wrote in the caption, "I performed while listening to the cheering of SONEs. It was good and I was happy to see you. DEEP is on fire."

Hyoyeon is seen wearing a deep red shirt with a short jean skirt exuding her charms. She looks much slimmer than before after losing 9 kgs (19.8 lbs). 

Meanwhile, Hyoyeon made a comeback and is promoting her latest mini-album 'DEEP.' The title track "DEEP" is a dance song in the EDM genre with the intensity of harmonizing a splendid electronic sound, a sharp clap sound, and a dynamic bassline.