Demi Moore's Shrinking Figure

Credit: Jon Kopaloff/FilmMagic; Jim Spellman/WireImage

Demi Moore is disappearing!

The sex scandal threatening Moore's marriage to Ashton Kutcher has really taken a toll on her fitness. 

Friends of the the 49-year-old Five director tell Us Weekly she's been skipping meals in the wake of 33-year-old Kutcher's rumored infidelity and affair with Sara Leal, 22.

VIDEO: Ashton's alleged mistress opens up about their affair

"She is superskinny, and it's hard to look at," one friend tells Us.

As rumors plague the actress and her Two and a Half Men star husband, Moore has become more focused on perfecting her figure and recently signed up for a juice-cleanse delivery service.

But another pal insists Moore's slimdown isn't about vanity. "She's very upset, and hasn't been eating," says the source. "It's taking a toll."