She’s always up to something and yesterday (September 2) Rihanna was spotted on the set of her new film “Battleship.”

The “Rude Boy” songstress looked a bit annoyed with the paparazzi as she made her way around the Oahu, Hawaii lot while holding up her middle-finger salute.

In related news, Ri-Ri is already gearing up to release the lead single from her fifth studio album beginning next week.

“Only Girl (In the World)” will hit airwaves this Tuesday (September 7th) on Ryan Seacrest’s website at 3am Pacific/ 6am Eastern.

Last weekend she tweeted, “@RyanSeacrest Soon! In less than 10 dayz ima send u sumn special, and ur gonna play it OVER and OVER, like I’m the only girl in the world!”

Making the most of the mild weather, Sam Worthington was spotted out and about in Sydney, Australia today (September 3).

The “Avatar” actor was joined by his lovely girlfriend Natalie Mark as he tried to ignore the nearby paparazzi.

Earlier in the week, Sam was seen stocking up on some adult beverages with a few buddies at a local liquor store.

And on the career front, Mr. Worthington has been cast in a new indie surfing drama tentatively titled “Drift,” to be shot in Perth.

He was arrested for drunk driving and sentenced to jail time, and Chris Klein has paid his debt to society.

The “American Pie” actor appeared in Van Nuys court, pleaded no contest to his DUI charge and served 96 hours behind bars

In addition to his time served, Chris will also have four years of probation, hefty fines, and a year and a half of alcohol education.

Klein told the court, “I apologize for my wrongdoing and I really appreciate that the court gave me the opportunity to prove how seriously I took all of this.”

Getting back to work on her latest project, Kristen Stewart did her best to keep cool in the New Orleans heat as she prepares for scenes for her new film, “On the Road’” on Thursday afternoon (September 2).

According to a GossipCenter source on the scene, the Bella Swan babe left her Big Easy hotel with hunky co-star, Garrett Hedlund, as the pair headed off to rehearsals.

Once arrived on-set, Miss Stewart proceeded to puff on a cigarette and chomp down a banana before sitting down with the crew to go over her lines.

The sighting comes just after Kristen moved out of her shared Bel-Air abode with Robert Pattinson, as a real estate agent told E! Online: “They are no longer renting the home.”

Back to “On the Road”, the Walter Salles directed film is due out in 2011 and is about “a young man sets out to travel the roads and railways of America.”

The highly-anticipated release of “Camp Rock 2” is upon us and, according to its cast members, will be nothing short of a rockin’ hit.

MTV News recently caught up with a few of the “Final Jam” stars, with Matthew Finley telling, “I’m excited for everybody to see the dance numbers and performance numbers. I feel like we worked really hard. There were several genres of music in there. Listening to the soundtrack gets me amped and excited, so I’m ready to see it with action and with the movie.”

Meanwhile, Jasmine Richards added, “There’s a lot of cool, fun songs and dances.”

And one of the show’s stars, Joe Jonas, revealed, “For us, that was really exciting because for the first one we stuck to about three different sets, and this time probably having 15, 16 different sets, for us, that was really exciting.”

“Camp Rock 2: The Final Jam” airs on the Disney Channel later tonight (September 3).

Ushering in another year in his eventful life, Charlie Sheen is celebrating his 45th birthday today, September 3, 2010.

Experiencing quite the rollercoaster past twelve months, the “Two and a Half Men” star hit headlines after landing in jail for a Christmas Day attack on ex Brooke Mueller.

Following numerous court appearances, Sheen ended up getting quite the light sentence consisting of one month in rehab and no work conflicts.

On the brighter end of things, Charlie recently locked up quite the impressive payday for his CBS television work - as he became the highest-paid actor on the small screen while earning $1.25 million an episode.

Looking to make a name for herself, Elizabeth Olsen has landed not one, but two major movie roles.

The younger sister to Mary Kate and Ashley Olsen is set to star in the upcoming “Peace, Love, and Misunderstanding” alongside “Gossip Girl” hunk Chace Crawford.

She is also working on an indie drama movie called “Martha Mercy May Marlene” which follows a young woman, who - after escaping a cult - moves in with her older sister.

You may have seen Ms Olsen alongside her famous twin siblings in their straight-to-video flicks like “The Adventures of Mary-Kate & Ashley” and “How the West Was Fun.”

When you’re on top, everyone wants to take shots at you and Taylor Swift is learning what that feels like first-hand.

The “Should’ve Said No” songstress was verbally attacked by Black Crowes frontman Chris Robinson during his recent interview with Nylon Guys magazine.

Robinson quipped, “I find it embarrassing that adults are like, ‘Taylor Swift is very talented.’ She’s not. She might be cute, but she’s horrible.”

“They have stylists who dress them, they make records with producers who play a chord into the computer and it all comes out the same…When you have computers doing it all for you…there’s no individuality. Singing isn’t always about being on key; it’s about emotionality.”

Taking care of some overseas promotional duties, Ali Larter was spotted at a press conference for “Resident Evil: Afterlife” in Tokyo, Japan today (September 3).

The “Heroes” hottie was joined by costars Milla Jovovich and Wentworth Miller at the Grand Hyatt Tokyo Hotel where fielded questions and posed for pictures.

In related news, the preggers actress recently let it slip that she’s going to be a mom to a beautiful baby boy.

During a recent interview she shared, “I’m not a gamer. I’m not someone who can sit at the computer and figure out these games — it takes a different kind of genius to get to the different levels and get through the different doors. (Pointing to her baby bump) Possible gamer? Well, after watching these movies and hearing all the gunfire I don’t know what he’s — it’s — going to turn out like.”