Eat something, Lindsay!

That's the desperate plea from fans of Lindsay Lohan (search), who fear the teen star has turned herself into a sickly stick figure.

And they're swamping a new Web site — FeedLindsay.com — to beg her to gain weight through a petition that urges: "Please pick up a sandwich and eat it, or ice cream, or any food that might put those oh-so-cute pounds back on."

In recent months, dramatic photos have shown the 19-year-old "Herbie: Fully Loaded" star looking incredibly thin and a mere shadow of her former busty, curvy self.

Lohan insists the weight loss is merely a matter of her taking better care of herself by eating healthy foods and working out — not from an eating disorder.

Jason Cage, a DJ in Savannah, Ga., started the Web site to convince her that nobody wants "a skinny, malnourished skeleton."

More than 7,900 people have signed the petition so far.

To get her salivating, Cage has linked the site to mail-order companies that sell fattening desserts.

He's also selling "Feed Lindsay" T-shirts and has a video game in which players stuff Michael Moore into her body to make her gain weight.

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