Are Justin Bieber and Selena Gomez back together? Who’s coming to the defense of Gwyneth Paltrow? Why has “Jersey Shore” star Ronnie Ortiz-Magro had to put the fist pumping and smushing on hold? And Taylor Swift bought a $17.75 million home…in cash?

Find out all about this and more on POP TALK on “Live from The Couch!”

Beyonce Knowles, Gwyneth Paltrow, Jennifer Aniston, Michelle Williams, Reese Witherspoon, Kate Hudson, Cameron Diaz, Ellen DeGeneres, Julianne Moore, Chris Rock, Jamie Foxx, Olivia Munn, Selena Gomez, Paul Rudd, Jon Hamm, Jennifer Westfeldt, Will Ferrell, Sarah Silverman, Amy Poehler, Adam Scott, Rashida Jones, John Slattery, Jeremy Renner, Conan O’Brien, and others join together in the fight against gun control, in a new PSA for DemandaPlan.org.

The campaign, started by Mayors Against Illegal Guns, comes a week after the horrific massacre in Newtown and amid the polarizing debate rippling through the U.S. about gun violence and the Second Amendment.

Looking into the camera, they read through a list of some of the 31 similar attacks carried out in the US since Columbine in 1999.

‘Virginia Tech. Tucson. Aurora. Fort Hood. Oak Creek. Newtown. How many more?’ they ask. Watch the moving PSA here:

Over the weekend, I headed out to East Hampton, NY to cover the Hamptons International Film Festival for AXSLive! We got interviews with tons of celebrities — from Alec Baldwin to Richard Gere to Sienna Miller.

Catch some of my interviews below:

Also, don’t miss my interviews with Gwyneth Paltrow, Christy Turlington, and celebrity trainer Tracy Anderson from the New York City launch of “The Pregnancy Project” DVD.

PHOTO: Marion Curtis/Starpix

Julianne Moore was spotted at the New York City premiere of “Game Change.” The actress looked stunning supporting her latest film wearing a black and white gown to the event held at the Ziegfeld Theatre.

Natlie Portman and Benjamin Millepied were spotted at Il Covo restaurant this week enjoying a nice evening out. The Hollywood star and her man were joined by their 8-month-old son, Benjamin as they went to the Beverly Hills hot spot.

Gwyneth Paltrow was spotted at the Louis Vuitton/Marc Jacobs exhibition in Paris! Looking happy as always, she arrived at Les Arts Decoratifs as part of the Paris Fashion Week Autumn/Winter 2012 festivities.

It’s a family affair! Kate Hudson was spotted by her mom Goldie Hawn’s side helping out during the launch of her namesake foundation. Joined by fiance Matthew Bellamy, the actress looked amazing as she supported her mom, Goldie Hawn, at the at Annabels held kickoff of The Hawn Foundation.

She’s such a great wife! Khloe Kardashian was spotted supporting hubby Lamar Odom as his Dallas Mavericks took on the New York Knicks! She seemed to be enjoying the sporting event and was extremely happy after Lamars team won!

Katy Perry was spotted at the Miu Miu Ready-To-Wear Fall/Winter 2012 runway show in Paris this week! The songstress rocked a blue pony tail as she arrived at Conseil Economique as part of the Paris Fashion Week!

Kim Kardashian even looks good pumping gas! Kim K was spotted filling up the tank of her new Ferrari at Sherman Oaks looking gorgeous as always rockin’ some platform pumps!

FOR MORE STAR SIGHTINGS THIS WEEK, KEEP READING…

The “Glee” set has seen cameos from a number of stars over the years including Britney Spears, John Stamos, Idina Menzel and more.

One of the stars of the show, Lea Michele (Rachel Berry), isn’t shy about admitting her fave!

“I just, I really love being surprised,”actress Lea Michele told MJ at the Mohegan Sun 15th Anniversary celebration last weekend. “I love when I open up a script and they’re like, by the way, next week’s episode is with Gwyneth Paltrow” she continued before gushing that Gwyneth is her favorite (so far!)

MJ Readers: Sound off — who would YOU like to see on “Glee?” Leave comments after the jump!

PHOTO: WireImage

Gleeks alike came together in New York this week for the Samsung AT&T Spring Fling and official “Glee LIVE!” concert in New Jersey. The two-part party held meet-and-greets with “Glee” co-stars Naya Rivera, Jenna Ushkowitz, Kevin McHale, and Cory Monteith.

A little birdie told MJ that, at the kickoff event, Naya and Jenna serenaded birthday boy Kevin with a vivacious rendition of “Happy Birthday” for his 23rd!

Later on, all three performers sang along to songs spun by DJ Cobra, while their fans looked on.

And in a surprise move on Thursday night (June 15), both Gwyneth Paltrow and Jane Lynch (who was donning a floor-length blue ballgown) made an appearance at the concert.

“On my way to Glee live! Rock. On.” Gwyneth tweeted, before hitting the stage to perform “Forget You,” in a rockin’ pair of knee-high boots.

WATCH GWYNETH’S PERFORMANCE…AFTER THE JUMP!

PHOTOS: BFA / Patrick Butler (Inset)

When Gwyneth Paltrow walks into a room, you know it’s an A-list event…

And, as such, reporters at the 3rd Annual Bent on Learning charity event were clamoring for a quote (at least!) from the Hollywood actress. “No interviews, sorry!” Gwyneth told the media.

“How about a fun photo?” MJ asked with his “Georiga Peach” charm. “Yes, I’ll do a photo” she replied before motioning MJ to nuzzle up next to her for a “HOT SHOT!”

Other celebs in attendance at the Alice + Olivia and Zico Coconut Water-sponsored event included Russell Simmons, models Molly Sims and Hillary Rhoda, Gossip Girl gals Tika Sumpter and Kelly Rutherford, and (a very preggers and gorgeous!) Rebecca Minkoff, designer to the stars.