Ashlee Simpson and Pete Wentz — Officially Divorced

They said it wouldn’t last … and they were right — because Pete Wentz and Ashlee Simpson are officially divorced … after a judge signed off on the split.

According to court docs filed in L.A. County Superior Court and obtained by TMZ … the marriage was formally terminated on November 22 … after a 3-and-a-half year run.

As for the couple’s kid — Bronx Mowgli — it’s unclear how the couple settled their custody disagreement … because the details of the divorce settlement are being kept under wraps.  TMZ previously reported, Pete wanted joint custody of their son … but Ashlee had checked the box to get primary physical custody.

The former couple also worked out a secret deal regarding the division of their multi-million dollar empire.

As we previously reported, Wentz chalked up the split to the couple simply growing apart.