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.
Further proof -- Tom was wearing his ring last week too.
Edit:The Church of Scientology is adamant ... nobody under the age of 16, including Suri Cruise, is allowed to join its elite Sea Organization.
The Church's lawyer has released a statement ... saying in addition to the minimum age requirement (16 years old), minors must have "consent of both parents and/or all legal guardians" in order to join.
The lawyer adds, "There are no exceptions to that policy."
As TMZ first reported, Katie Holmes is concerned Tom Cruise will put 6-year-old Suri in the Sea Org. in the very near future ... and she clearly does NOT want that to happen.
Nonetheless ... the Church is adamant ... no one under 16 can become part of Sea Org.