By Radar Staff 
 
 Demi Moore‘s daughters, Rumer, Tallulah and Scout Willis, are growing “ever increasingly concerned” about their troubled mother’s recent bizarre behavior, a source close to the three girls tells RadarOnline.com exclusively. 
 
 As we previously reported, the 50-year-old actress, who split from husband Ashton Kutcher last year after he was caught cheating with a San Diego party girl, has raised some eyebrows over the past week with her strange actions. 
 
 PHOTOS: Demi Moore Busts Out Some Very Bizarre Dance Moves In Miami 
 
 Last Wednesday, Moore was snapped performing some very attention grabbing and peculiar gyrations at the Chanel Beachside Barbecue at the Soho House in Miami for Art Basel. Showing off her very slender long legs, Demi was busting a move to the music, wildly dancing around, much to the amusement of fellow partygoers Lenny Kravitz and George Clooney. 
 
 Earlier that evening, Demi set tongues wagging by turning up at the exclusive Chanel Beachside Barbecue with a very unusual dinner guest — a stray cat that she had found poolside at the Soho Beach House! An eyewitness told the New York Post: “The kitten sat on Demi’s lap throughout the meal… She was cuddling and petting it.” 
 
 PHOTOS: Demi Moore Takes A Stray Cat To Dinner 
 
 Moore continued her attention hungry performance Friday night, hitting the red carpet for the Art Basel celebration of fashion photographer Terry Richardson, and upstaged the guest of honor in a deeply scooped, cleavage-revealing dress. Sporting a pair of huge new black eyeglasses, Demi pranced and mugged for photographers, pulling a variety strange faces and poses. 
 
 PHOTOS: Demi Moore Appears Desperate For Attention At The Terry Richardson Art Basel Miami Event 
 
 “Rumer, Tallulah and Scout are mortified by their mother at the moment,” the source says. “They are becoming ever increasingly concerned about her bizarre and outlandish behavior. Demi just seems absolutely desperate for attention and they fear that she isn’t in a good place mentally right now. 
 
 “They had to hold an intervention for her earlier in the year prompting her to check into rehab for treatment and they fear the same thing is going to have to happen again. To say they are worried about her would be an understatement.” 
 
 As RadarOnline.com previously reported, Moore only recently reunited with the girls after a period of estrangement, and the source says they fear Demi’s bizarre behavior could drive a wedge between herself and her daughters once again. 
 
 “The girls are thoroughly embarrassed by Demi right now and her desperation for attention is troubling,” the source says. “They say it is very out of character for her to be behaving the way she has been and they are concerned there is some deep routed issue at the heart of it. And, it’s not just the girls who are worried — several of Demi’s friends have also said they are concerned something is seriously wrong right now.” 
 
 RELATED STORIES: 
 
 Demi Moore Keeps The Party Going In Miami 
 
 Annie Leibovitz’s New York Pad On Sale For $33 Million! Take A Peek Inside 
 
 Still No Divorce From Ashton, But Demi Moore On Vacation With New Boy Toy 
 
 Meow! Demi’s Bizarre Behavior: Finds Stray Cat & Brings It To Dinner ||||| Click to email this to a friend (Opens in new window) 
 
 Perhaps the age difference was too much this time — art dealer Vito Schnabel has called off his short-lived fling with Demi Moore after she joined him at Miami’s Art Basel. 
 
 Page Six can reveal Vito, 26, broke things off with Demi, 50, after she arrived in Miami last week to party with the stars at the busy art fair. 
 
 One source told us, “Vito has worked very hard to be taken seriously in the art business, and doesn’t want to be seen as somebody who dates celebrities. He hated having photographers follow him around after word got out about him and Demi.” 
 
 The source continued, “And Vito wasn’t too happy that Demi flew down to party at Art Basel while he was working to build his business. It was a distraction he didn’t need while all the big collectors were in town.” 
 
 SEE DEMI AT ART BASEL AND BEYOND 
 
 We exclusively revealed Moore and Schnabel, the dapper son of acclaimed artist Julian Schnabel, hit it off at Naomi Campbell’s lavish birthday bash for her lover Vladimir Doronin in Jodhpur, India in early November. 
 
 But things cooled off dramatically in Miami, with the pair staying apart and exchanging glances at a bash for art collectors’ Web site Art.sy at Soho Beach house on Wednesday. 
 
 The breakup didn’t appear to faze Moore, who hung out with Lenny Kravitz and later headed out for a girls night at Le Baron at Jelsomino with pals including Stacy Kiebler until 3:30 a.m. 
 
 On Saturday Demi was spotted holding court at LDV boss John Meadow’s new club Rec Room, surrounded by a group of mostly male friends at a corner table until the early hours. 
 
 The actress was also seen partying Saturday at Liv at the Fontainebleau Hotel, dancing in the DJ booth with Kiebler as DJ Tiesto played to the huge crowd. Reps for Moore — who is still trying to hammer out her divorce with Ashton Kutcher — and Schnabel didn’t get back to us . ||||| By Radar Staff 
 
 Demi Moore was already looking startling thin before husband Ashton Kutcher‘s latest cheating scandal, and now the actress’ weight has plunged to a frightening new low, according to an expert. 
 
 As RadarOnline.com previously reported, the 48-year-old Ghost star was a shadow of her former self when she appeared at the New York premiere of her new thriller Margin Call on Monday. 
 
 PHOTOS: Demi Moore Looks Frightening Thin On Red Carpet 
 
 “She has lost another 10 pounds in a short period of time,” nutritionist Majid Ali, who as not treated the star, told RadarOnline.com in an exclusive interview. 
 
 Ali estimates that the 5’5″ actress appears to weigh as little as 90 pounds. “She looks like she has gone even lower in the past month. 
 
 “Those protruding cheeks and rather gaunt face are not a healthy sign,” he explained, adding that, “Stress can really debilitate an appetite.” 
 
 PHOTOS: LeAnn Rimes In Wild Animal Print Jumper In NYC With Eddie Cibrian 
 
 As we previously reported, Kutcher is accused of bedding a blond party girl named Sara Leal at the Hard Rock Hotel in San Diego last month, on the same night of his sixth wedding anniversary with Demi. 
 
 Known for her strict diet and weight loss regime, the Striptease star revealed to British Elle earlier this year that she used to have an unhealthy “extreme obsession” with her body. 
 
 From the raw food diet to the Master Cleanse, the Charlie’s Angels star has been open in the past about her dramatic methods of calorie-restriction to lose weight, as RadarOnline.com previously reported, and now fears are mounting that she could be heading back down an unhealthy path. 
 
 PHOTOS: Super Skinny LeAnn Rimes Out And About In London 
 
 “It is clear from the pictures that she looks as if she is going through some rough times,” New York-based psychotherapist Jessica Aronson, who has not treated Demi, told RadarOnline.com. “It is not uncommon for people to lose or gain weight during times of stress. 
 
 “Very often women use their weight as a way to control something when other areas of their lives feel out of control,” such as by restricting calories or over-exercising, explained Aronson. 
 
 “Women focus on their bodies because it distracts them from the pain of the issues in the relationship.” 
 
 RELATED STORIES: 
 
 Demi Moore Scary Skinny On NY Red Carpet – Still Wearing Wedding Ring 
 
 Super Skinny Ali Lohan Out And About In New York City 
 
 LeAnn Rimes Says Weight Loss Is ‘Natural Progression Of Life’
– Just days after the world learned of Demi Moore's latest younger man, he has apparently dumped her. "Vito has worked very hard to be taken seriously in the art business, and doesn’t want to be seen as somebody who dates celebrities," a source explains to the New York Post, adding that the constant stream of paparazzi proved to be too much for the artist. The final straw? "Demi flew down to party at [Miami's] Art Basel while he was working to build his business," the source says. "It was a distraction he didn't need," so he broke up with her then and there. That didn't dissuade Moore from her mission, though, as she just partied with Lenny Kravitz and other celebs instead. And that did not please her daughters, who are "ever increasingly concerned" about their mom's bizarre behavior, a source tells Radar. Moore was snapped dancing at one of the Miami parties (click to see), and she showed up at another party with a stray cat she found at a pool. Later, she walked the red carpet for another art gala in a cleavage-baring dress and gigantic eyeglasses, making all sorts of faces for photographers. "Rumer, Tallulah, and Scout are mortified," the source says.