f(x) posted a picture in honor of their 3 year anniversary.

f(x) member Victoria posted on her me2day, "f(x) 3 year anniversary! We did a great job guys! Let's continue to work hard together. We also thank all our fans and we hope that you will stick by us on our journey," along with some photos.

In the pictures, f(x) members are looking very happy and close. Amber back hugging Victoria is also seen.

f(x) debuted in 2009 with their digital single, La Cha Ta.