XXL-TINA: Check out this photo of CHRISTINA AGUILERA that shocked fans over the weekend at the MICHAEL JACKSON Tribute Concert in Cardiff,  Wales ...

Her blonde hair, described as a “matted mess” and her skimpy corset and fishnets did little to flatter what the London Sun called “her overweight body."

DID DEMI MOORE CONSULT WITH A DIVORCE LAYWER???!!!:  According to London's not-always-reliable "The Mail", DEMI MOORE consulted with a divorce lawyer over the weekend about ending her marriage to ASHTON KUTCHER.

“Miss Moore has been totally humiliated,” claims an industry insider. “On Friday, therefore, she consulted a lawyer about getting a divorce.” Sources tell Radaronline the couple had been in Kaballah counseling for weeks trying to save their marriage, but after Ashton hooked up with Sara Leal, Demi decided there was no way she could ever forgive him. “

Meanwhile ...Ashton and Demi both attended Kabbalah services in Los Angeles over the weekend. As is custom at the Kabbalah center, they sat on opposite sides of the aisle from each other, but Ashton reportedly gave Demi a big hug after the service.

IS NAOMI WATTS THE NEXT TO BE HUMILIATED BY HER MAN???: LIEV SCHREIBER is denying a rumor that he cheated on girlfriend and baby mama NAOMI WATTS with a model on the set of his latest movie project.

Liev was in Australia recently making a movie with TONI COLLETTE and  model Phoebe Roberts employed as Toni's body double. According to the gossip site The Dirty, the hookup happened on the night of the cast wrap-up party. Liev's rep is denying it ever happened. Quote: "This is a complete fabrication and I'm passing it along to Mr. Schreiber's attorney to handle."

Liev and Naomi aren't married, but they've been together since 2005, and have two sons together.


MICHAEL JACKSON'S KIDS MAKE ONSTAGE APPEARANCE:  The MICHAEL JACKSON tribute concert went down Saturday in Cardiff, Wales, and despite there being very little big name acts and a few last minute cancellations, 50,000 people showed up.

Michael's kids, Prince, Paris and Blanket, even made a surprise appearance onstage to speak briefly and introduce BEYONCÉ, who performed via satellite. Paris -- sporting a replica of the red jacket Michael wore in the "Thriller" video, said, quote, "We're very happy to be here on this special night to honor our father."

Meanwhile ... two of the biggest names advertised didn't even show up. CHRIS BROWN reportedly wasn't allowed entry into the U.K. because of his criminal record in the States. And JENNIFER HUDSON is said to have had an "issue" with not being given enough time to work with the songs she was asked to perform, and was therefore a no show.

Ne-Yo kicked off the show with "Billie Jean" in front of a crowd of 50,000 and even added some moonwalking to make it authentic. Gladys Knight ended the evening with "Gone Too Soon," before bringing Jackson's children on stage to help her out with "Don't Stop 'Til You Get Enough."

Jackson family members in attendance were mom Katherine and siblings Latoya, Tito, Marlon and Jackie.  Janet, Jermaine and Randy were NOT there, because they opposed doing the show during Dr. Murray's trial.

Speaking of Dr. Murray ...Prosecutors played a portion of his two-hour taped interview with police Friday at his manslaughter trial. In the interview, Murray admitted that he gave Jackson numerous drugs, including propofol, to help him sleep. You'll find a more detailed synopsis HERE.

SNAP SHOT: RIHANNA was out in London over the weekend with a British boxer and model named Dudley O'Shaughnessy. Word is he's her new man.

BABY POOP - KRISTIN DAVIS ADOPTS:KRISTIN DAVIS of "Sex and the City" fame has adopted a baby girl, whom she's named Gemma Rose Davis. She tells People magazine, "This is something I have wanted for a very long time. I feel so blessed." Kristin is 46 and unmarried ...

2. DENISE RICHARDS tweeted this pic of her 16-week-old adopted daughter Eloise in a pair of $265 Gucci jeans. No big deal, I guess, when CHARLIE SHEEN is writing you $55,000 child support check every month ...