‘SUMMER STARTS NOW!’ she tweets about the sunshiney new track.By James Montgomery

Katy Perry’s cover art for “California Gurls”

Photo: Capitol

With a single tweet, Katy Perry entered the summer-jam sweepstakes, unveiling her brand-new single, “California Gurls,” to the masses. And, oh, don’t think she didn’t know it.

“SUMMER STARTS NOW!,” Perry shouted … er … wrote on her [...]

‘SUMMER STARTS NOW!’ she tweets about the sunshiney new track.By James Montgomery

Katy Perry’s cover art for “California Gurls”

Photo: Capitol

With a single tweet, Katy Perry entered the summer-jam sweepstakes, unveiling her brand-new single, “California Gurls,” to the masses. And, oh, don’t think she didn’t know it.

“SUMMER STARTS NOW!,” Perry shouted … er … wrote on her [...]

Photo: Mazur/KCA2010/WireImageJustin Bieber reclaimed the Number One spot he relinquished to his mentor Usher last week as My World 2.0 ruled the chart despite a 65 percent sales decrease to 102,000 copies, making it the lone album on the Billboard 200 album chart to surpass 100K, according to Nielsen SoundScan. Usher’s Raymond V. Raymond swapped [...]

Barring any more courthouse surprises, Lil Wayne is expected to finally begin serving his one-year sentence behind bars starting today. Before he heads to New York’s Riker’s Island, however, Weezy had one more going-away present for fans: his latest video off the rap-rock disc Rebirth, “Drop the World” with guest Eminem. The video was originally [...]