Britney Spears Concert Rehearsal Video - Exclusive

Britney Spears rocks out her bangin’ new body in this new leaked video footage from a recent “Femme Fatale” concert rehearsal, as obtained exclusively by JustJared.com.

The 29-year-old pop princess practiced her dance moves for her catchy song “How I Roll,” produced by Bloodshy, Henrik Jonback, and Magnus.

Britney appears to be getting back into tip-top shape and genuinely looks like she’s enjoying herself. SO EXCITING. Can’t wait till she dances full-out on stage!!!

“Tickets go on sale tmw for the #FEMMEFATALETOUR,” Britney tweeted earlier today. “Come see How @NICKIMINAJ & I roll this summer. http://bit.ly/gaEyPK”

Concert tickets go on sale TOMORROW (April 30) at BritneySpears.com/Femme-Fatale-Tour!

FYI: JustJared.com is giving away tickets ALL of the Femme Fatale concert dates and one grand prize winner will get a meet and greet with Brit Brit herself. Enter to win Britney concerts tickets now!

Britney Spears Concert Rehearsal Video - JustJared.com Exclusive

Jana Kramer's 'Whiskey' Song Premiere - EXCLUSIVE

Jana Kramer will be premiering a new song called “Whiskey” on The CW’s One Tree Hill during Tuesday’s episode (April 26).

This is her second performance on the show! Her first song was “I Won’t Give Up,” which she co-wrote.

Jana tells JustJared.com, “On the show, Quinn (Shantel VanSanten) asks Alex (Kramer) to perform a song at Club Trick and ‘Whiskey’ seemed like such a good fit for this particular episode because the characters are all facing different areas of losses and finding ways to deal with the pain. One of the things I love about the song ‘Whiskey’ is that it’s something everyone can relate to because we’ve all had moments in our life that we wish we could take back.”

Below, listen to “Whiskey,” which will be available at all digital retailers beginning next week after OTH airs. We love the song, especially the chorus!

Follow Jenna and Just Jared on Twitter @KramerGirl, @JaredEng, and @JustJared. More info about Jana and her music at JanaKramer.com!

Jeff Bridges Joins 'The Seventh Son' -- EXCLUSIVE

Jeff Bridges has signed on to star as an exorcist in The Seventh Son, sources exclusively confirm to JustJared.com.

The Oscar-winning actor is a big get for the film, which has offers out to I Am Number Four star Alex Pettyfer and Oscar-nominated acftress Jennifer Lawrence, who would portray the role of a suspected witch.

The 1700s storyline has Alex’s character, Tom Ward, training to be an exorcist (he’s able to see and hear ghosts and smell the presence of death).

The Seventh Son was formerly known as The Spook’s Apprentice and is part of Warner Bros. and Legendary Pictures’ adaptation of Joseph Delaney’s young adult series The Last Apprentice.

Maroon 5's 'Never Gonna Leave This Bed' Video Premiere -- EXCLUSIVE

Check out the exclusive JustJared.com video premiere of Maroon 5’s latest single, “Never Gonna Leave This Bed“!

Frontman Adam Levine gets cozy with his real-life girlfriend, Russian model Anne Vyalitsyna, in a bed all around Los Angeles while encased in a clear box.

The band also enlisted the help of fans, asking them to come out to the Santa Monica Pier, Grauman’s Chinese Theatre, and Roosevelt Hotel to be part of the video!

“Thanks to everyone who showed up! You made the whole thing work!” Adam tweeted earlier this month. “This video feels special. There’s something really bold and exciting about it.”

Love the concept of this video!

FYI: VH1 will also be airing the video this Saturday (February 5)!

WHAT DO YOU THINK of Maroon 5’s “Never Gonna Leave This Bed” video?

Maroon 5 - Never Gonna Leave This Bed

Ryan Gosling is a Birthday DJ -- EXCLUSIVE

Ryan Gosling and director Derek Cianfrance pair up to celebrate the birthday of their Blue Valentine producer Jamie Patricof on Thursday night (January 13) at The Roosevelt Hotel’s hot new club The Spare Room in Los Angeles.

During the birthday blowout, DJ Ryan was seen spinning eclectic beats in front of a star-studded crowd including Nicole Richie, Jessica Alba and husband Cash Warren, Harvey Weinstein, and producers Neal Moritz and Lawrence Bender.

Earlier in the day, Jessica was seen shopping at the Satine boutique and lunching at Joan’s On Third.

Happy Birthday, Jamie!

15+ pictures inside of Jessica Alba shopping at Joan’s…