Planning for a world tour is hard work — just ask Selena Gomez.

For the past two months, the "Come & Get It" singer has been perfecting every dance move, every wardrobe change and every beat of music for her Stars Dance World Tour, but now the time has come to put the finishing touches on the project, and MTV News was given an exclusive invite to witness it all.

"It's one of the last days putting it all together so it's kind of a little hectic, everyone is putting on wardrobe trying on outfits, dancing in the outfits going over the numbers nonstop," Gomez said at one of her final dress rehearsals at Citizens Business Bank Arena in Ontario, California. "It's the last couple of days we're buckling everything down."

During rehearsal, Gomez gave us a front row seat as she belted out the words to her song, "Undercover," off her chart topping album Stars Dance.

Dressed down in black sweat pants and a white T-shirt, Gomez gracefully moves about the stage showing off her dance moves. And even though it was only rehearsal, one can tell that the Stars Dance tour takes on a much different feel then her previous 2011 tour, We Own the Night.

"I have a little more say. I'm wanting to control the show more from the content to the choreography to everybody a part of it," Gomez said. "If anything my music is escalated and I just wanted to make it bigger and better than the last one, so it's all happening."

Gomez, who is

It was a pretty lousy weekend for Katy Perry.

On Friday, her gold-plated Prism truck got smashed up in a Walmart parking lot. On Saturday, her hotly anticipated single leaked. And then, on Sunday, she scrapped plans for the song's very public unveiling at New York radio station Z100 and announced that it would be available for download at iTunes.

Still, as you can probably gather from the lyrical content of "Roar," she wasn't about to let any of that get her down. Sure, in the past, she's sang about self-empowerment ( for example) and overcoming adversity (), but on the whole, her brand of pop has generally lacked in import — she's the California Gurl, remember? — and purpose. That fun-filled formula has worked out pretty well for her up to this point ... though it all changes right now.

Because "Roar" is Perry's most purposeful single to date. It is the empowerment anthem to end all empowerment anthems, five-plus minutes of uplift and inspiration and more mantras than a guru's guidebook. She is a champion, she has the eye of the tiger, she is thunder and she is going shake the earth beneath your feet. She is fed up and she is not going to take it anymore. She's paraphrasing Malcolm X, for crying out loud.

It's not exactly clear who Katy is standing up to in the song — Critics? Anonymous Internet commenters? Russell Brand? — though that's probably the point. There wasn't one specific catalyst behind her transformation ...

In a night where we saw Harry Styles twerk, crazy red-carpet outfits, a tearful tribute for Cory Monteith by Lea Michele and rockin' performance by Demi Lovato, many celebrities went home with surfboards at the 2013 Teen Choice Awards. MTV News rounds up the winners that were announced from the big night. See 'em below!

Acuvue Inspire Award
WINNER: Nick Jonas

Ultimate Choice Award
Ashton Kutcher (16 lifetime Teen Choice Awards)

Choice Movie: Drama
WINNER: The Perks of Being a Wallflower
»Argo
»Les Misérables
»The Great Gatsby
»The Impossible

Choice Movie Actor: Drama
WINNER: Logan Lerman, The Perks of Being a Wallflower
»Ben Affleck, Argo
»Bradley Cooper, The Words
»Leonardo DiCaprio, The Great Gatsby
»Hugh Jackman, Les Misérables

Choice Movie: Comedy
WINNER: Pitch Perfect
»Identity Thief
»Peeples
»The Incredible Burt Wonderstone
»Warm Bodies

Choice Movie Actor: Comedy
WINNER: Skylar Astin, Pitch Perfect
»Jason Bateman, Identity Thief
»Steve Carell, The Incredible Burt Wonderstone
»Nicholas Hoult, Warm Bodies
»Craig Robinson, Peeples

Choice Movie Actress: Comedy
WINNER: Rebel Wilson, Pitch Perfect
»Anna Kendrick, Pitch Perfect
»Melissa McCarthy, Identity Thief
»Kerry Washington, Peeples
»Olivia Wilde, The Incredible Burt Wonderstone

Choice TV Show: Drama
WINNER: Pretty Little Liars
»Gossip Girl
»Nashville
»Revenge
»Switched At Birth

Choice TV Actor: Drama
WINNER: Ian Harding, Pretty Little Liars
»Penn Badgley, Gossip Girl
»Joshua Bowman, Revenge
»Lucas Grabeel, Switched At Birth
»Nick Wechsler, Revenge

Choice TV Actress: Drama
WINNER: Troian Bellisario, Pretty Little Liars
»Blake Lively, Gossip Girl
»Vanessa Marano, Switched At Birth
»Hayden Panettiere, Nashville
»Emily VanCamp, Revenge

Choice TV Actor: Fantasy/Sci-fi
WINNER: Ian Somerhalder, The Vampire Diaries
»Jensen Ackles, Supernatural
»Stephen Amell, Arrow
»Jared Padalecki, Supernatural
»Paul Wesley, The Vampire Diaries

Choice TV Actress: Fantasy/Sci-fi
WINNER: Nina Dobrev, The Vampire Diaries
»Katie Cassidy, Arrow
»Ginnifer Goodwin, Once Upon a Time
»Kat Graham, The Vampire Diaries
»Kristin Kreuk, Beauty and The Beast

Choice TV Show: Comedy
WINNER: Glee
»The Big Bang Theory
»Modern Family
»New Girl
»Suburgatory

Choice TV Actor: Comedy
WINNER: Jim Parsons, The Big ...

It's been nearly one month since died of a drug overdose in July. Girlfriend Lea Michele has been grieving with friends and family, breaking silence only to send a tweet of thanks to her supporters. But on Sunday (August 11), Lea went on national TV to give a teary tribute to Monteith.

"I just wanted to be here to personally thank all of you and tell everyone out there how much your love and support has meant to me over these past difficult few weeks. Not that I had any doubt before, but you guys are most certainly the greatest fans in the world," she began, accepting the award for Choice TV Comedy Actress.

"I wanted to dedicate this award to Cory," she said. "For all of you out there who loved and admired Cory as much as I did, I promise that with your love, we're going to get through this together.

"He was very special to me and also to the world. And we were very lucky to witness his incredible talent, his handsome smile and his beautiful, beautiful heart. So whether you knew him personally or just as Finn, Cory reached out and he became a part of all of our hearts. And that's where he'll stay forever."

Before Michele made her speech, the rest of the "Glee" cast took the stage sans Lea. "Glee" won awards for Choice TV Comedy, Choice TV Male Scene Stealer (Chord Overstreet) and Choice TV Breakout Star (Blake Jenner). Their show comes back for another season on September 26. "Cory was like ...

Anaheim, CA — Disney's live action panel at its D23 fan expo might have been light on "Star Wars: Episode VII" details — the crowd collectively let out a disappointed "aww" — it was not short on surprise guests appearances, the biggest of which brought Angelina Jolie on stage to a standing ovation.

The Academy Award-winning actress took to the stage to discuss her newest "deliciously cruel" role as the evil sorceress from the Disney classic, "Sleepy Beauty" — Maleficent.

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Jolie shared her love of Disney with the audience, and also her fondness for the character, who she wanted to put a new "sexy" spin on. She apparently loved playing Maleficent so much that she told the audience that she misses the horns she wore for the film.

Anaheim, CA — For it's part in the Disney's D23 Expo, Marvel Studios and its president Kevin Feige presented the audience an exclusive look at the rest of what it calls Phase Two.

First up was November's "Thor: The Dark World," the fantastical return to the world of monsters, gods, and villains. Feige kicked off the presentation with the action sequence and sizzle reel that the audiences at San Diego Comic-Con saw last month. He then welcomed some of the cast including Natalie Portman, Tom Hiddleston, and Anthony Hopkins, who spoke about what we can expect from Jane Foster's first few days in Asgard. Marvel then debuted a never-before-seen clip from the film that takes place not long after Jane arrives.

At some point during the film, Jane becomes infected with something from another world. In an Asgardian hospital wing, she lies on a table, arguing with some of the technicians whether the machine examining her is the device she believes it to be. Odin arrives to compare Jane to a "goat at the banquet table" before telling her to leave. Even in the short clip, the same quirky humor from the first film was again on display.

Marvel then shifted its focus to 2014, "Captain America: The Winter Soldier," and "Guardians of the Galaxy." Chris Evans, Anthony Mackie, and Sebastian Stan came out on stage after Marvel replayed the Comic-Con presentation for the crowd. The D23 audience then watched the first rough clip from the film.

In a S.H.I.E.L.D. quinjet, Cap and Black Widow discuss a potential girlfriend for the legendary soldier, ...

Robin Thicke may have three VMA nominations, a headlining pre-Video Music Awards performance and a bona fide "song of the summer" under his belt, but according to the singer, there was a time when his label wasn't very enthused with the steamy single "Blurred Lines."

"Well, when we first recorded the song, you know, you get this buzz about it where you feel anything is possible," Thicke told MTV News. "And then reality kicks in and the record company says they don't get it. And then you have to kind of re-convince yourself that there's still something special there."

Thicke told The Associated Press that the record company didn't pay for the now-iconic, nude lady-crammed video — the vid that one could say launched a thousand boob-filled spin-offs. "Rémy Martin paid for the video," he said.

Ironically, it was the video — of which there are both dirty and clean versions — that changed everyone's minds about the hit song. "As soon as we made the video, all of a sudden everybody got it and immediately everybody thought it was going to be a big hit," he told MTV News. "I started to believe in it again once the video was finished."

And so, apparently, did the public at large. The Diane Martel-directed "Blurred Lines" video is now up for three VMAs: Video of the Year, Best Male Video and Best Collaboration.

While Thicke could easily gloat 'til Brooklyn — where the VMAs go down on August 25 — he's pretty humble about his newfound success.

"After you've ...

After an afternoon filled with emotional — and, at times, contentious — testimony from both Usher and his ex-wife, Tameka Raymond, a judge in Atlanta has denied Raymond's request for temporary primary custody of their two children.

The Friday hearing came after a near-fatal accident at Usher's house in Atlanta, where one of their children, Usher V, was swimming in a pool and got his hand stuck in a drain. His aunt, and a maid attempted to save him, but were unsuccessful. The child remained at the bottom of the pool until two men, who were working in the house, finally removed him from the pool and performed CPR.

Usher was not home at the time of the incident, and two days later, his ex filed paperwork accusing him of putting Usher V and their other son, Naviyd, at risk because of his busy schedule. Raymond also claimed that Usher delegated supervisory responsibility to his aunt, who was not trained as a caregiver, and asserted that the singer had also fired every caregiver who was on staff when he was awarded primary custody of the children last year, and does not keep his ex-wife informed of his travel schedule.

And at Friday's emergency hearing, Raymond took the stand to back those claims up. She testified that the pool at Usher's house "did not have any kind of safety fence around it," and that the drain in the pool "did not have a proper cover." She also called into question the qualifications of Usher's Aunt, Rena Oden, pointing out that ...