The label's head designer, Marc Jacobs, has asked her to pose for the Autumn/Winter 2006-07 collection.
A source tells magazine Us Weekly, "She just got asked to be in the ads. She's going to say yes."
Lohan is a long-time fan of the company and is "extremely excited" according to the source.
The move has raised fashionista eyebrows, as some insiders believe the 19-year-old isn't sophisticated enough to represent the prestigious fashion house.
Jacobs has stated that he wants his next ad campaign to be young and "cartoony."
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