THE CHUPACABRA IS STRESSED OUT

IMDb says that Nicole Richie blames stress as the reason she's so skinny, but she understands she has a problem and is trying to put on weight.  Nicole says:  

"I've never been diagnosed with an eating disorder. My weight is a result of stress. I didn't lose weight on purpose, I simply wasn't eating enough. But I did realize I had gotten too thin. Now I'm doing all I can to get my weight up – and have gained some. I'm seeing a trainer and a nutritionalist and eating healthy."

Hmm, yes, it is a mystery as to why she can't put on weight.  Oh, wait, no it's not.  The rumor has always been she had gastric bypass after the first year of "the Simple Life", when she dramatically changed from a tubby lump to a mythical monster.  And now she can't put on weight even when she tries.  Not that it matters at this point.  Skinny, fat, whatever – she still looks like something that came back to haunt you because you buried it face down. 

(Note – Two kinds of gastric bypas, this kind leaves almost no scarring.)