Hollywood Dirt – Mariah and Minaj Tweet Their ‘Idol’ Goodbyes, J-LO and Pitbull Rumored to be Doing It + More

COULD BE TRUE, COULD BE CRAP - JENNIFER LOPEZ AND PITBULL ARE SHARING THEIR DOWN THERE PARTS: J-LO'S relationship with boy toy Casper Smart may be going to the dogs -- specifically her musical collaborator PITBULL.

Now this is per the pages of the National Enquirer so there may or may not be any truth to it, but the tab claims Casper confronted Jennifer with his concerns that she and Pitbull have been getting all smoove up in each other, and she didn't give him a straight answer.

A source close to Jenny says, “He...ordered her to cut ties with [Pitbull]. Jen was so taken aback that at first she just laughed in Casper’s face. She reminded Casper that she’s the boss and moneymaker in the relationship –- and if he doesn’t like the terms, he can hit the road." The supposed insider breathlessly continues, "And if Jen dumps him, Casper knows his days of living high on the hog are over. He broke down and sobbed, ‘Jen can’t leave me yet –- she promised to make me famous!’”

TODAY IN STRANGE AMANDA BYNES BEHAVIOR: AMANDA BYNES -- or someone who looked and acted a lot like her -- showed up alone at the SkyZone trampoline facility in Buffalo, New York yesterday sporting a brown wig, and requested the staff to not take pictures of her. (They didn't, but fellow patrons did!)

And even though Sky Zone's owner told TMZ Amanda signed a waiver "using her middle name...same last name...[and]same DOB,"  and exhibited "the same tattoos," Bynes hit up Twitter to deny it was her. "THAT'S NOT ME!" she wrote. "I've never been to SkyZone! That looks nothing like me! I don't own a brown wig!" Really? What about the one you were photographed in last week? (PHOTO)

Adding to the mystery ... Amanda was filmed walking around Buffalo. The guy who shot the video kept asking why she was in Buffalo, and she kept saying, quote, "We're not in Buffalo" but never denies that she's Amanda Bynes

MARIAH AND MINAJ OFFICIALLY OUT AS 'IDOL' JUDGES: MARIAH CAREY and NICKI MINAJ have seemingly confirmed speculation that they will not be back on "American Idol" next season. Mariah's publicist made it official by Tweeting, quote, "With the global success of 'Beautiful' (#1 in 30+ countries so far), Mariah Carey confirms her world tour, and says goodbye to 'Idol'."

SNAPSHOT - HEIDI'S 'TOP MODEL' FINALE BUM RUSHED BY BOOBIES: For some reason, two topless women jumped onstage with HEIDI KLUM during the finale of "Germany's Next Top Model".

They seemed to be protesters, but it's unclear what exactly they were protesting. One of them had "Heidi Horror Picture Show" painted on her naked chest. (PHOTO)

TODAY IN CELEBRITY WARDROBE MISHAPS: KIM KARDASHIAN came thisclose to showing us her granny panties! While stepping out in Beverly Hills and posing for pics on Wednesday, a breeze caused Kimmie's dress to fly up. Fortunately, or unfortunately if you're into mom-to-be bellies, she managed to catch it just before anything underneath was actually revealed. (PHOTO) (PHOTO) (PHOTO)

BEYONCE P***ED CLOTHING BRAND TRIED TO TOUCH UP HER TOOKUS: It appears BEYONCE is getting sick and tired of people trying to touch, and touch up, her famous booty.

Last week, an overexcited fan reached out and tried smacking dat ass during a concert in Copenhagen, Denmark, and now comes word that some boneheads at H&M clothing label thought it would be a good idea to make her famous badunk smaller by touching up photos of her posing in the company’s swimwear.

A source told UK’s rarely-reliable The Sun tabloid, “When Beyonce found out that they had edited the way her body really looked, she hit the roof. Her people refused to give the pictures the green light so H&M were forced to use the originals.”

CELEBRITY YEARBOOK:  We continue to explore what some of today's big stars looked like in their yearbook photos. Today's featured celebs are JENNIFER LOPEZ and "Mad Men" star JANUARY JONES ...