Cameron Diaz Says She Can't Gain Weight!

"Oh no.. I'm so skinny!"

Wow... I wish I had this problem!

Actress Cameron Diaz hasclaimed that she has trouble putting on weight!

The 38-year-old starlet weighs just 8.5 stone and said that she has a really good metabolism. The Knight and Day star says she actually eats all the time though:

"When I'm filming, I have to eat a lot more. I'm constantly eating because I'm burning so much energy doing what we're doing.Even if we're just sitting around on the set of a movie, we're talking about the next scene and burning energy."

Cameron continued saying, not being able to gain weight is a 'burden':

"I try to have the right kinds of food which I can eat throughout the day. I have a really good metabolism but sometimes I want to put weight on and I can't. That's my burden."

Haha is she joking?? Why is that a burden? A lot of people would love to have that problem Cameron!