Super star Lady Gaga had an on-again off-again relationship with her now ex-boyfriend Luc Carl for most of the year. They initially broke up in May but briefly reconciled over the summer. By September, the relationship was officially over and Gaga was linked to Taylor Kinney. The relationship started when the Vampire Diaries actor starred as Gaga’s love interest in her “You & I” video. Now the couple has gone public as they were recently photographed for the first time publicly in California.

Russell Brand fueled divorce rumors on Thursday after he was photographed in London — without his wedding ring. Divorce rumors have been swirling around the comedian and his wife of one year, Katy Perry. Although the couple denied split reports in recent months, they’ve been conspicuously silent over the past week. The rumors kicked into high gear after Russell and Katy spend Christmas apart. Perry has been vacationing in Hawaii, while Russell spent the holiday in London.

Picture from TMZ.com

It seems that Katy Perry is very hot and cold when it comes to product placement. Perry recently responded to a Twitter question about product placement by saying “Do it w/style & grace. Not so in ur face like some” – prompting speculation that she was dissing Britney Spears, who recently collected a reported $500,000 for product placement in her latest music video. Early Wednesday morning, Perry angrily took to Twitter once again to explain that she was not directly talking about Britney Spears’ newly released video, but simply product placement in general.

Crystal Harris is defending her engagement to 84-year-old Hugh Hefner. The 24-year-old told Piers Morgan that the 60-year age gap is irrelevant because they have so much fun together. She explained, “I love Hef, he’s the nicest person I’ve ever met in my entire life. I have so much fun with him and it’s hard for me to keep up with him. I mean, for my birthday I wanted to go bowling – and for his birthday he wanted to go to two different night clubs. So it’s fun, we laugh. We have so much fun together. It’s the best.”

Meanwhile, he’s been all across the world, so it’s only fitting that Justin Bieber gets to go to the one place most guys can’t even dream of entering — The Playboy Mansion. Hugh Hefner revealed on The Piers Morgan Show that after tweeting about taking his fiance to see Justin’s new movie, Never Say Never, he was approached by Justin and his father, asking if they could visit the mansion. Hef is willing to oblige, but there is no word yet on when the Biebs and his pops get to hang out with the playmates. Hef’s fiance, Crystal Harris, said “I got Bieber fever. We all do. All the Playmates. We want to meet him.”

Charlie Sheen’s estranged wife Brooke Mueller has reportedly moved back in with the troubled actor. A source told RadarOnline.com, “She moved in several days ago.” Although Charlie has been spotted kissing a new girlfriend, a Radar source said, “He is not committed to one woman right now. His definition of ‘girlfriend’ is different than ours.” Radar reported on Wednesday that Sheen left for a tropical vacation with Brooke, his live-in porn star girlfriend and another woman.

Katy Perry has announced dates for her California Dreams North American tour, which kicks off June 7th in Atlanta and wraps up mid-August with two hometown gigs in California. She announced the North American tour news yesterday while at the Facebook headquarters. Fans will be able to submit their own photos of the show via Twitter, which will be incorporated into the live shows and also appear on Perry’s website. Perry’s world tour gets underway next month in Portugal.
June 30 – Toronto – Air Canada Centre
July 2 – Montreal – Bell Centre
July 3 – Ottawa – ScotiaBank Place

Britney Spears’ new single, “Hold it Against Me,” has shot to Number One on the Billboard Hot 100 chart — making her only the second artist to debut multiple songs at Number One. Spears shot to the top of the chart in 2009 with the song “3.” Mariah Carey is the only other act to have more than one song land at Number One after its first week. Carey did it with the songs “Fantasy,” “One Sweet Day” and “Honey.” Follow the link to hear “Hold it Against Me”
http://www.youtube.com/watch?v=GJSm_QMO6zA

JLo has been busy lately.. Jennifer Lopez will shoot the video for her new single “On the Floor” this weekend. According to MTV.com, she told Ryan Seacrest, “We’re going to be looking for real club kids. It’s just about having a good time, getting all sweaty, and it’s all about the music and leaving it on the dance floor.”

Charlie Sheen is back at it again after rumors swirled yesterday of the possibility him and Brooke could be getting back together… Sheen reportedly dropped $26,000 on prostitutes in just one weekend earlier this month. RadarOnline.com reported that the troubled sitcom star paid $10,000 to a prostitute named Ginger for four hours of sex, and earlier that day — $8,000 to two others.  The website claims that Charlie was using “copious amounts of cocaine” when the women met him at his $40,000 a night suite at the Palms Resort in Las Vegas. A source told Radar, “Ginger said Charlie was high on cocaine when she got to the room and continued to do drugs in front of her. He was totally out of it and clearly had been partying all night long.”

Anne Hathaway will play Catwoman in the next Batman movie; The Dark Knight Rises. Director Christopher Nolan confirmed the casting, specifying that Hathaway will star as Selina Kyle in the much-anticipated film, which is due out on July 20, 2012. Nolan said, “I am thrilled to have the opportunity to work with Anne Hathaway, who will be a fantastic addition to our ensemble as we complete our story.” Christian Bale will return as Batman.

Selena Gomez is reportedly going to take legal action over some topless photos making the rounds online. TMZ.com reports that Gomez insists the pictures have been Photoshopped, and now her lawyers are taking immediate legal action. This news comes just after Mylie Cyrus’ ‘naked’ photos were leaked. They also turned out to be fake.