DEMI AND ASHTON REUNITE!!!: Are DEMI MOORE and ASHTON KUTCHER getting back together? There seems to be talk about it happening on the World Wide Web of Celebrity Speculation. Witnesses at a birthday party they both recently attended say the two greeted each other with a, quote, "60-second embrace."

The rumors were fueled further after Ashton agave a speech for the guest of honor, during which he said, quote, "I've made all these horrendous mistakes in the last year." The source says, quote, "Ashton's voice started to break as he spoke. He just fell into tears. He sat down to a round of applause while Demi just looked frozen."

Yet another source adds, quote, "[Ashton and Demi] are still desperately in love and could be on for a reconciliation. The divorce isn't being processed right now. They're by no means getting back together but equally no decision has been made to end things for good so everything is in play at this stage."

DID MADONNA DISS LADY GAGA DURING TOUR REHEARSAL??? WE REPORT, YOU DECIDE!!!: Remember all that talk about LADY GAGA'S "Born This Way" being a retread of MADONNA'S "Express Yourself"? Then Lady Gaga claimed Madonna was cool with it, but Madonna later called it a "re-do"?

Well, Madonna has now either embraced their similarities, or has taken another shot at Gaga. While rehearsing for her show in Israel, Madge segued into "Born This Way" while performing "Express Yourself".  There's amateur video of this on YouTube. The quality isn't the best, but you get the idea. She transitions into "Born This Way" at about the 1:00 mark. Check it, yo ...

DID JUSTIN BIEBER ASSUALT A PAPARAZZO???: JUSTIN BIEBER is usually accused of assaulting people's ears, so imagine my surprise when I heard The Bieb got into a physical altercation with some guy. And, get this, Bieber actually put the guy in the hospital!!! Wait, what???

Here's the deal ... The incident went down Sunday after Justin and SELENA went to a mall in Calabasas, California to see a movie. As the couple tried to get in their car, the paparazzo started snapping away. That's when Justin supposedly got physical with the guy. The photog, who claims he suffered an injury that caused him chest pains, was taken by ambulance to a nearby hospital where he was treated for pain to his upper torso. He later filed a formal complaint. Police are investigating, and want to talk to Justin and Selena. You can peep a few pics of the incident HERE, HERE and HERE.

One photographer who witnessed the altercation said his fellow paparazzo was in the wrong. "He absolutely stepped over the line. He not only blocked Justin from the car but appeared to say something ugly just to make the kid lose his temper." Word is, a lawyer who just happened to be on the scene walked up to the photographer after Justin left and advised him that he could make a nice wad of cash if he called an ambulance and filed a police report.

SNAPSHOT - ASHLEY JUDD 'OVERWHELMED' BY HUSBAND'S VICTORY: ASHLEY JUDD'S husband DARIO FRANCHITTI won the Indy 500 for the third time on Sunday, and Ashley was so overcome with emotion she cried ...

Here's Franchitti, Ashley and their dogs the following day posing for the official trophy presentation ...

And this is video of the final minutes of the race. Judd can be seen celebrating at around the 2:40 mark ...

CELEBRITY BIRTHDAYS FOR MAY 29 – ANNETTE BENING, MELISSA ETHERIDGE AND MORE

BRITNEY AND DEMI LOVATO CLASH AT FIRST X FACTOR AUDITIONS: By now you've probably heard the report that BRITNEY SPEARS walked out of auditions for X Factor -- which she and SIMON COWELL deny -- but that wasn’t the only story that came out of last week’s Austin, TX, auditions. An audio recording surfaced over the weekend of DEMI LOVATO and Britney butting heads over a 14-year-old male contestant.

“I think that you have a great voice and your tone was great,” Demi tells the teen. “But, I don’t really know where you fit[in this competition.]" Brit totally disagreed, telling the kid,quote, “I think you can be bigger than the next Justin Bieber,” which prompted the crowd to erupt in applause.

KIM KARDASHIAN SHOWS US HER TWEETS - THINKS AIRLINE EMPLOYEES STOLE HER LUGGAGE: KIM KARDASHIAN just returned to Los Angeles from Europe, but her luggage was a little lighter than it was when she started the trip. And she thinks someone at British Airways went through her bags and helped themselves.

Kim claims someone at British Airways violated her luggage and helped themselves to some "sentimental" items. Kim hit Twitter Sunday to vent about it.  "Very disappointed in British Airways for opening my luggage and taking some special items of mine!" she wrote. "Some things are sentimental and not replaceable. What happened to the days when you could lock your bags! There's no sense of security and no trust!" She added, "Shame on you."

Meanwhile ... Kim is considering suing the Australian tabloid which reported last week that she's addicted to both Valium and sleeping pills, a charge she vehemently denies. According to TMZ, Kim has already contacted her lawyers about drafting letters warning she’ll sue any publication that picks up the untrue story.

SNAPSHOT - J.LO AND MARC ANTHONY HUG ON STAGE:  JENNIFER LOPEZ and MARC ANTHONY hugged it out and held hands over the weekend during the finale of their Latin talent show, "Q'Viva! The Chosen" ...

JUSTIN TIMBERLAKE AND JESSICA BIEL HAVE ENGAGEMENT PARTY: JUSTIN TIMBERLAKE and JESSICA BIEL made it official Saturday with an engagement party at the home of Jessica's stylist. An 'Us Weekly' source says about a 100 people were there, including former N*SYNC band mates Lance Bass and JC Chasez. Hit up THIS LINK for more details.

On a related note ... KEIRA KNIGHTLEY is also getting hitched. Her publicist confirmed she and musician boyfriend James Righton have gotten engaged. The couple has been dating since early last year. No wedding date was announced.

MAZEL TOV! CYNTHIA NIXON MARRIES GIRLFRIEND: Former 'Sex and the City' star CYNTHIA NIXON married longtime girlfriend Christine Marinoni in New York Sunday. Cynthia and Christine have been together since 2004. In 2011 Marinoni gave birth to a son, Max. Nixon has two children from a previous relationship to Danny Mozes.