MILAN (Reuters) - American actress Megan Fox will strip down to her underwear for Giorgio Armani's Emporio Armani fashion brand, the Italian design house said on Wednesday 14 October.

Fox, who starred in the "Transformers" films, follows in the footsteps of "Posh Spice" Victoria Beckham who along with her soccer-playing husband David heads the Emporio Armani autumn/winter underwear campaign.

The actress will also be the new official worldwide face for Armani Jeans for next year.

Armani said in a statement the soon-to-be unveiled adverts were shot by photographers Mert Alas and Marcus Piggott at the weekend in Lost Angeles. The duo also took the Beckhams' underwear ad pictures.

Last week, the Milan-based fashion house said Portuguese footballer Cristiano Ronaldo would replace David Beckham as the new sports model for Emporio Armani's men's underwear.

(Reporting by Marie-Louise Gumuchian, editing by Paul Casciato)