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.

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.

Fox 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 last weekend in Lost Angeles.

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)