Christina Aguilera's diva behavior starts before the Dirrty singer even arrives on the set of The Voice, with an insider exclusively telling RadarOnline.com that the judge is late to the set nearly every single day.

“Christina is consistently about two hours late,” a source tells RadarOnline.com.

“For season three this has got to stop.”

We're getting down to the nitty gritty on this season of NBC's the Voice, as all eight contestants performed in a semifinal Monday, leaving judges Christina Aguilera, Adam Levine, Blake Shelton and Cee Lo Green each with the tough decision of eliminating one of their remaining two singers.

Tony Lucca seemed to make the best impression on Adam's team with his rendition of How You Like Me Now, a song selection the Maroon 5 hunk dubbed  "the perfect thing at the perfect moment."

Christina Aguilera took the stage on The Voice Monday, squeezing into a corset with fishnet stockings and Louboutin platform boots for a high-energy performance.

The singer belted out her 2003 hit Fighter, flanked by her Voice team and a high school choir.

We’ve got the new trailer of Sparkle, the movie that the late Whitney Houston was hoping would reboot her career, right here on RadarOnline.com.

The film’s trailer premiered on Monday’s Today Show; according to iMDb, its plot is about “three sisters [who] form a successful singing group, and must deal with the fallout of fame and drugs.”

His birthday was actually last month, but none of the dozens of A-Listers who came out Saturday night to celebrate Muhammad Ali turning 70 cared one bit. And it didn't stop them from opening their wallets big time during the auction that raised millions for his charity.

Stevie Wonder, who had given an emotional performance during Whitney Houston's funeral that morning, sang "Happy Birthday."

The sophomore season of NBC's breakout hit The Voice premiered following Sunday's Super Bowl, with the new crop of contestants choosing which one of the four celebrity coaches -- Christina Aguilera, Cee-Lo Green, Blake Shelton and Adam Levine -- they'd like to be their mentor.

In a rule change, each coach must have 12 contestants to take under their wing this year, up from last season's eight.

She's said she'd never been so anxious about a performance in her entire career, but Madonna put her nerves aside and performed a slick and polished Super Bowl Halftime show.

The pop star was brought to the stage, a la Cleopatra, and opened her 12 minute show with Vogue.

It was all about seamless production values as Madonna was joined by LMFAO for Party Rock Anthem

Grab a seat and get ready to be wowed on the second starstudded season of The Voice.

Christina Aguilera poured her very ample curves into a skimpy corset and fishnets as she performed at the Michael Jackson tribute concert in Wales on Saturday, and RadarOnline.com has the stunning photos.

With her oh-so-unflattering outfit plus her blonde hair extensions looking wild and unkempt, the 30-year-old singer drew gasps from the audience.

PHOTOS:  Christina Aguilera Pours Her Curves Into Skimpy Costume For MJ Tribute Concert

And while her performance of Charlie Chaplin's 'Smile' - one of the King of Pop's favorite songs - was a hit, her ensemble hit a seriously bum note.

The Black Eyed Peas will play the star-studded tribute concert to Michael Jackson at Millennium Stadium in Wales, RadarOnline.com has learned.

Peas’ co-founder will.i.am -- who worked as a producer in the studio with Michael from 2007 until his death in 2009 – issued a statement Friday from Los Angeles, saying “This show is going to be an incredibly personal and moving evening for me.

Remember that Michael’s music, his great, great songs, have been an inspiration to my whole life and certainly formed the soundtrack to my childhood.

“When I was a little kid of six or seven growing up in Los Angeles, there was Michael recording Thriller, and all his early hits, just a few miles away across town  -  obviously I didn’t know him at that time, but I loved him as a fan.