Sexy actress Charlize Theron has jumped on board to serve as executive producer for the film she's already starring in.

The period drama HEAD IN THE CLOUDS, which also stars Spanish actress Penelope Cruz, begins filming in Paris and London at the beginning of May (03).

The pre-World War II epic romance centres around a young CAMBRIDGE UNIVERSITY student played by STUART TOWNSHEND and a budding fashion photographer - Theron.

Their relationship is severed when he heads to Spain to fight fascism, but they are later reunited when she risks her life for him.

Cruz plays a Spanish refugee in the flick.