Kat Lee

Move over, Justin! There's a new leader on YouTube and her name is Rihanna! The 'Diamonds' songstress has surpassed the Biebs as the most viewed artist on the video website. Go girl!

This is the breakup that just won't end. Even though Taylor Swift and John Mayer haven't been together for over three years, they keep fueling the gossip fire by writing songs about each other.

If you yearn for the days of grainy VHS footage, Bruno Mars has totally got your back. Mars and his Hooligans released his video for 'Treasure' and it looks like it was filmed on the set 'American Bandstand' or 'Soul Train.' A little retro vibe neva hurt nobody!

One of Justin Bieber's partying cohorts is talking openly about the 'All Around the World' singer's drug use and the wild house parties that go down at his Calabasas mansion, but he's not painting Justin in a totally negative light.

Okay, Beyonce. We get it. You're not pregnant, you don't have to go around flaunting your impeccable abs just to get the message through.

It's Justin Bieber... in space! The 'All Around the World' singer has signed up to become a part of the maiden Virgin Galactic voyage into space.

If you want to get your drink on like Nicki Minaj, then fear not, The 'Pink Friday' rapper has teamed up with Myx Fusions to bring the world a new moscato wine bevy for all to enjoy.

Ok, let's put the rumors to rest here. Beyonce is not pregnant, so let's all agree to stop talking about it, cool? Cool.

Does Justin Bieber ever get tired? On the heels of a massive overseas touring stint and before he starts the U.S. leg of his lengthy Believe tour, JB has announced a new single, which will undoubtedly bring with it more promotional appearances and touring. Does this kid sleep?!

And the Kelly Osbourne / Lady Gaga battle royale continues. This time Kelly Osbourne has called out Lady Gaga, once again, in her cover issue of Cosmo. Can't these ladies just let this beef die already? Apparently not.

Snoop Dogg and Miley Cyrus may seem like an odd pairing, but these two mesh perfectly on Snoop's track for 'Ashtrays and Heartbreaks.' The video for the song shows scenes of a cityscape with Snoop Lion and Miley's reflections appearing on the various storefronts and buildings.

It seems as though The-Dream is tapping the entire Carter family for his upcoming album 'IV Play,' set for release on May 28. Jay-Z was previously featured on the track 'High Art' and now Beyonce is providing vocals for the track 'Turnt,' also featuring 2 Chainz. When d…