Ashlee Simpson has filed for divorce from Pete Wentz.
Documents were filed in L.A. County Superior Court, citing "irreconcilable differences" as the reason for the divorce. The couple married back in May 2008.
It's unclear what specifically led to the split. Ashlee wants joint legal custody and primary physical custody of the couple's son, two-year-old Bronx Mowgli.
HAPPIER TIMES: At some point, things apparently went south.
Simpson is repped by well-known divorce lawyer Laura Wasser and is also asking for spousal and child support. Wentz will be represented by Stacy Phillips.
There is no prenuptial agreement in play, according to reports.
The sad news comes shortly after Jessica Simpson's engagement to Eric Johnson. Ash's sister is also divorced, of course, having been married to Nick Lachey.
Here's hoping it's for the best, and that as difficult as this decision must have been, Ashlee, Pete and Bronx can move on with their lives amicably.