Nicole Richie has slammed rumours that she has checked into rehab.

Reports claimed that Richie had admitted herself last week in order to overcome her eating disorder. However, she insists she only visited the centre to undergo tests.

The TV star posted the following message on her myspace page: “Contrary to CNN's false accusations, I did not check myself into an eating disorder rehab. I do not have an eating disorder. Whoever has started this rumor is evil and mean but it's not true. I am happy and healthy and living my life."

Her publicist, Nicole Perna, confirmed the story. "Nicole has decided to undergo diagnostic treatment to determine why she's not been putting on weight," she said. "This is not treatment for an eating disorder."