Girls' Generation's self-promotion is becoming a hot topic on the internet as pictures and fan cams were uploaded that show the girls spray painting on the side walls of an old SM building. �

The members went to the SM Entertainment building located in Gangnam's Apgujeong on February 25 and had a fun time engaging in some graffiti. �They left their signatures and also drew out the logo of their 4th mini-album 'Mr.Mr.'

In addition, the girls greeted the fans who came out to take pictures and videos or just gaze in awe. �They also took selcas to capture this fun moment forever! �Check out the fan cam and some pictures.

SEE ALSO: "They're so good, this is what K-pop should be like," Girls' Generation's past live performance gains spotlight after 8 years