Melanie Griffith's Antonio Banderas Tattoo -- He's Still on Her Arm

Melanie Griffith is still carrying Antonio Banderas in the form of a tattoo on her right arm ... and she flat out showed it off yesterday in Santa Monica.

As TMZ first reported, the "Working Girl" filed for divorce from Antonio after 18 years of marriage. Griffith wants custody of their daughter and spousal support.

A referral to a good tattoo removal doc wouldn't hurt either.

However the divorce plays out, it's clearly going to take some time for Melanie to entirely erase Antonio from her life.