f(x)'s members, Luna, Amber, and Sulli were spotted on April 27th's airing of Mnet's 'Voice Korea'.

The three sat side by side with focused expressions as they watched the live performances. The members were captured on screen with a close up on Sulli, and immediately gained the attention of viewers.

During the episode, viewers commented via SNS, "The person that just came on was Sulli right?" and "Looks like an actress at the awards ceremony"

Meanwhile, as reported earlier, fans will be able to see Sulli in the new Korean drama adaption of 'Hana Kimi', 'To the Beautiful You', along with SHINee's Minho, as they were both confirmed for the lead roles.

Source+Picture: Star News via Nate