Los Angeles: R&B star Rihanna has toppled Lady Gaga as the most popular female celeb on Facebook.
   
Rihanna, 23, has replaced Gaga as the most-liked female star on the site, raking in more than 40.5 million 'likes', a far cry from the 5,000 she had last summer, reported the news daily.
   
Gaga started the year as the top living person on the social networking website, with only the late Michael Jackson garnering more 'likes' from fans around the world.
   
Eminem surpassed Gaga's feat in February and, by March, he had stolen the crown from the King of Pop too, with more than 30 million votes.
   
However, Gaga still rules over Twitter with over 11.6 million followers.

(Agencies)