Group f(x)'s member Victoria revealed pictures in celebration of f(x)'s 4th year debut anniversary.

Today, Victoria posted on her Me2day, "Congratulations to f(x)'s 4th year anniversary. We aged 4 years together" along with a picture.

In the picture are polaroid pictures of f(x)s members in their stage outfits for "First Wisdom Teeth." The members all made different poses, revealing a cute group picture.

f(x) made their debut in September of 2009 with "LA chA TA."

Photo Credit: Victoria Me2day