Nicole Richie wasting away?

OHMYGOSSIP — Nicole Richie is wasting away! The 31-year-old showed off her pin-thin frame on a recent European family vacation.

“Nicole is looking so bony, her friends and family are concerned that her body issues are flaring up again,” a source told Star magazine.

“She hasn’t been eating regularly, and her energy has been extremely low. Of course, she brushes off the concerns. But everyone feels she is struggling behind closed doors.

“Nicole has a history of extreme dieting so everyone — especially [husband] Joel [Madden] — keeps a close eye on her health.

“She picks at food throughout the day but never seems to sit down and eat a meal.

“Nicole’s in denial, saying her weight is fine. One look, and you can see it’s not.”