Pop star Katy Perry has amassed over a million new Facebook fans over the past week, more than any other Facebook page, according to Famecount. This massive increase in fans is most likely due to the release of her new single "Last Friday Night (T.G.I.F)," the video of which has attracted over 15 million views since June 12.     

The video for Katy Perry's "Last Friday Night (T.G.I.F)" is available to watch via Perry's Facebook page, but fans must first "like" the page before playing the video - something which undoubtedly contributed to the artist's 1,233,503 new Facebook fans over the seven days prior to June 17. 

According to data from social network monitoring site Famecount the increase of fans of Katy Perry's Facebook page was more than any other Facebook page over the past seven days.

In total, Californian born Katy Perry now has 29,319,125 Facebook fans and is currently the eighth most popular musician on Facebook. However, in terms of total fans, Katy Perry still has a long way to go before catching up with the three biggest Facebook musical stars - Rihanna, Lady Gaga and Eminem.  

Rihanna and Lady Gaga currently both have over 38 million fans with Gaga slightly ahead, while Eminem has over 40 million fans and is currently the most "liked" person, living or dead, on the social networking site.

Katy Perry - http://www.facebook.com/katyperry
Rihanna - http://www.facebook.com/rihanna
Lady Gaga- http://www.facebook.com/ladygaga 
Eminem- http://www.facebook.com/eminem