Well, this is not about models, who turned to acting or actresses, who also model... Just about the models, who have appeared in movies (as incidental characters or regular ones, doesn't matter). Just thought we could make a list of them or something...
Here's what I can remember, just at the top of my head...
Gisele Bundchen: Taxi (the American remake), The Devil Wears Prada
Alessandra Ambrosio: Casino Royal (the latest Bond)
Natalia Vodianova: CQ
Kristina Tsirekidze: Double Zero
Claudia Shiffer: a number of, actually, but the only one I remember is Richie Rich