Tom Cruise Divorce -- Katie Holmes' Wedding Ring Finally Comes Off

It's gone -- Katie Holmes has finally removed her wedding ring.

Holmes was photographed moments ago in NYC, as she left a "Project Runway" taping ... sans finger jewelry.

Katie had worn the ring as recently as last week -- just days before she filed for divorce from Tom on Thursday.

TMZ broke the story ... Katie believes her marriage to Tom became "irretrievably broken" at least 6 months ago -- so the fact that she was still wearing her wedding ring last week is another sign she intentionally blindsided Tom with divorce papers.