Girls' Generation Taeyeon's sexy back is summoning Internet users to their computer monitors.

From a photo posted on an online community board, Taeyeon's lower back is in full display as her stylist fixes her hair in the middle of preparation for a performance. Titled 'Taeyeon's waist,' the photo has viewers commenting on her slim waist that is probably a result of hard work, endless dance practices, balanced diet and numerous stage performances.

Amazed by Taeyeon's photo, Internet users responded, "The ultimate sexy back, Taeyeon" and "Wow, I love her."

Meanwhile, Girls' Generation is in the middle of their 2013 Arena Tour Concert as they make their way around 7 cities in Japan. The tour will conclude on April 21.