‘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,...

‘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,...

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...

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...

American Idol continued its winning ways Tuesday, while NBC’s heavily promoted Parenthood had a modest debut. Idol drew 23.5 million viewers over its two-hour broadcast and more than doubled its competition among adults 18-to-49, pushing Fox to another overall Tuesday win. Parenthood,...