MORE SIGNS POINT TO KATY PERRY AND JOHN MAYER HOOKING UP:Several celebrity websites, including Us Weekly and Popcrush, reported yesterday that KATY PERRY and notorious celebrity serial dater JOHN MAYER are an item.

This after the two were spotted leaving the Hollywood hangout Chateau Marmont Wednesday night. (PHOTO) According to an eyewitness who spoke exclusively to Us Weekly, it's not super serious ... yet. In the past, however, Perry has been pretty direct about her affection for Mayer, saying in a 2009 interview with Australian radio -- and I quote -- “I’d definitely shag the s*** out of him… I’ll go on record saying that.”

UPDATE - CASPER SMART WAS GETTING HIS HAIR DID:InTouch Weekly claimed JENNIFER LOPEZ'S boyfriend was photographed going into a sex shop because he went there to get an erotic massage. Star Magazine said he went there to watch a gay peep show.

The truth is, he just needed to use an ATM to get cash for a haircut. Or so says a New York City barber, who told the "real story" to Splash News. See, upstairs in that same building, he explained, is the Diamond Cuts barber shop, and according the the gossip site, Casper went there for a skin fade. Now, he did go to the porno shop briefly, but only to use their ATM so he could pay for the haircut.

COULD BE TRUE, BUT PROBABLY CRAP - NICK CANNON 'FURIOUS' OVER MARIAH'S 'IDOL' GIG:The "National Enquirer" claims MARIAH CAREY'S "American Idol" gig is causing problems in her marriage. Supposedly, husband NICK CANNON is "furious" that Mariah is competing against his show, "America's Got Talent,” even though the shows' seasons barely overlap.

Their "insider" says Nick was, quote, "dead-set against her taking the job. Right until the eleventh hour, he was begging her to pass on the offer.” The source adds that he even offered her “a one-time 'gift' of $15 million [to say] no." The "Enquirer" says Nick would much rather she be a 'stay-at-home mom'.

KRISTEN STEWART CHEATING SCANDAL - DIRECTOR'S WIFE WON’T LET HIM WORK WITH STEWART AGAIN: Looks like Rupert Sanders’ fling with KRISTEN STEWART may have cost him a job. Rupert was expected to direct the sequel to ‘Snow White and the Huntsman,’ with Stewart once again starring, but his wife has put the kibosh on that.

According to Radaronline's source, "[His wife] Liberty let it be known in no uncertain terms that…she just doesn’t want him to ever work with Kristen again." And while he wants to do the movie, the source adds, quote, "He knows his actions were inexcusable, and he's going to have to bite the bullet…on this one."

OPRAH WINFREY SHOWS US HER TWEETS: OPRAH hit up Twitter and posted this photo of her makeup-free, sitting in the makeup trailer on the set of her upcoming movie, and captioned it "Me and my GIRLS."  And by the way, she’s referring to the wigs on Styrofoam heads behind her, not her prominent lady lumps! Cochino!


USHER’S EX CLAIMS HIS 'STRESS' OVER STEPSON'S DEATH IS 'BOGUS' : The bitterness between USHER and his ex-wife is back on. Tameka Foster is accusing Usher of using the recent tragic death of her son as a result of a jet ski accident to court sympathy from fans, the media, and the court system.

Tameka says her ex’s public statements about suffering “stress and strain” following the death of her son Kile are “BOGUS,” adding Usher “visited Kile in the hospital only once” during his 15-day stay. Usher has asked the court to delay their next custody hearing, but his ex wants a judge to deny his request, saying that putting the custody battle behind her will help her heal and move on.

HEATHER LOCKLEAR - YES OR NO?:  HEATHER LOCKLEAR -- who turns 51 next month -- was photographed playing tennis in a cute, pink outfit yesterday. What do you think, (PHOTO 1, PHOTO 2) still looks good for an old lady, Yes or No?