It had to explode at some point: LeAnn Rimes Cibrian furiously took to Twitter to berate a fellow diner who caught the singer and her husband eating at a Chicago restaurant on Friday night. Addressing the person who apparently suggested that the star was too skinny, she wrote: 
 
 How dare someone come to me at a table w/ the boys & tell me I need to eat something. What is wrong with people!? AS I'm stuffing my face....have another drink and maybe take a class in manners! Cheers! 
 
 Photos of the 28-year-old have been publicized since April, when a drastically slimmed-down Rimes appeared at the NCAA basketball championship game in Houston to sing the National Anthem, then, months later, shared bikini photos of herself on the beach. 
 
 Perhaps, in an effort to negate claims of an eating disorder, Rimes followed up with this tweet on Saturday: "Pizza and chinese food for us for the night." ||||| 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’
– It's tough being skinny. Just ask LeAnn Rimes. The singer has been the subject of much too-thin chatter (which she has addressed on Twitter), and it doesn't show signs of letting up. The Huffington Post reports that Rimes "blew up" on Twitter following dinner with hubby Eddie Cibrian in Chicago on Friday. Apparently, a fellow diner approached her and said something about her weight. Rimes was none too pleased. "How dare someone come to me at a table w/ the boys & tell me I need to eat something," she tweeted. "What is wrong with people!? AS I'm stuffing my face....have another drink and maybe take a class in manners! Cheers!" Click to read her food-related follow-up tweet.