Mischa Barton has hit back over the attention her weight loss has received in the press, branding the whole situation "ridiculous".

The former OC star - who has slimmed down dramatically in recent months - says that her skinny frame is simply the a result of eating more healthily and keeping fit with regular yoga classes.

Mischa writes on her blog: "I've been watching what I eat. I still love my pilates and yoga and I have cut back on fatty foods a bit.

"I'm happier and healthier than ever. Things are really well in Mischa world. There's nothing drastic going on."

Curvy Mischa in 2008 (left) and painfully thin Mischa in January (right)

Mischa also likens the media to, "mean girls in high school."

She adds, "One minute, I'm too fat, the next I'm too skinny. The press is always looking to start rumors and create drama.

"Honestly I think this whole situation is ridiculous. But there comes a time when you have to address these things."

See some more stars whose weight has come under the spotlight below