"She's rail thin," says a source of Angie, who is estimated to carry just 118 pounds on her 5'7" frame, while 140 pounds is the norm for her height. "You're afraid to hug her because she might break."

NOT EATING?
How could this happen? In a word: stress. "Angie doesn't seem to have a healthy appetite," says a source. "When she's depressed or stressed, it's worse."

Right now, Angie is likely both, since mom Marcheline Bertrand lost her battle with ovarian cancer. "When someone close dies, everything changes, including your physical habits," explains Russell Friedman, co-author of The Grief Recovery Handbook. "It's common to not eat. It just doesn't seem important to some people who are grieving."

It seems that even before her mom's death, food wasn't that important to Angie. She reportedly fainted three times last October while shooting A Mighty Heart in India, and a source told Star at the time, "she's been surviving on trail mix." Part of the problem may be that Angie gets so involved caring for her kids (Maddox, 5, Zahara, 2, and Shiloh, 8 months), she neglects herself.