Penelope Cruz and Scarlett Johansson are to steam up the big screen in Woody Allen's new movie - by taking part in a reported lesbian sex scene.

The actresses will lock lips and get hot and heavy in Vicky Cristina Barcelona, which also features Cruz's boyfriend Javier Bardem. According to British tabloid The Sun, Allen's aiming for one of the most erotic scenes in movie history.

A source tells the publication, "People will be blown away and even shocked. Penelope and Scarlett go at it in a red-tinted photography dark room, and the whole scene will leave the audience gasping." (KL/WNTSU)

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