Shia LaBeouf -- Damn, the Kid Still Cleans Up! (PHOTO)

Shia LaBeouf took a night off from his go-to fashion choice -- homeless chic -- and had his suit and tie working instead ... for a night out in Italy.

Shia, featuring a freshly shaved skull, was fresh and clean for the "Man Down" premiere at the Venice Film festival.

What a difference a tux (and probably a shower) makes.