Lindsay Lohan is set to make her big screen comeback in a biopic about the life of tragic porn star Linda Lovelace.

At least that's what Lindsay's saying.

She's telling friends that she'll play the lead role in "Lovelace," a movie about the tragic porn icon who later became a feminist, anti- porn activist.

But directors Rob Epstein and Jeffrey Friedman say they haven't signed up Linds.

"Definitely not true for our project, which is 'Lovelace'," they said,

Hey boys, word to the wise.

All PR is good PR. Sign Linds up quickly and watch your PR rocket.