Rihanna

Is Rihanna acting like she's the only girl in the world?

Of course we all love following the antics of our favorite (and least favorite!) celebs. But sometimes, things get to be a little too much.*

How many cars does Justin Bieber have to get before we stop hearing about them? How far will Amanda Bynes go before people stop encouraging her? How much do we really care how much of Pregnant Kim Kardashian's baby shower Kanye West went to?

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Rihanna went from Rated R to rated-X in a recently-unearthed video from a November 2011 concert.

In the clip — yours for the viewing below — she has a fan pulled up from the audience, pushes him down on the stage, and grinds her crotch against his before waving her lady-parts in his face. She then pulls him up into a seated position and presses his hand to her chest, dragging it...

Justin Bieber is currently the only star with more than 40 million Twitter followers.

JB broke the barrier on June 4 and tweeted recognition with "#40MillionBeliebers - thank u. i love u. #grateful" and "#40Millionstrong."

According to Twitter Counter, Lady Gaga is still the second most followed star, with just under 38 million; behind her are Katy Perry, President Barack Obama, Rihanna,...