Evan Rachel Wood is practically unrecognizable in these sexy pix for the new Gucci fragrance, Guilty.

In the ad, Wood, who's currently playing vampire queen Sophie-Ann on True Blood, appears to be nakedly cavorting with a hot male model... who looks way closer in age to the 22-year-old actress than her boyfriend Marilyn Manson, who is almost 20 years older!

I guess if her acting career doesn't pan out, she could always make it as a model -- HOT!