Kris Humphries' parents should teach divorce school -- because the ex-couple's divorce has been finalized ... a mere 26 days after Kris' mom filed.
TMZ broke the story ... Debra Humphries filed for divorce from Kris' dad William on August 3rd. The divorce settlement agreement had already been signed.
A Minnesota judge signed the divorce decree on August 29th -- making the split official. It's as quick and clean as they come.
As you know, Kim Kardashian filed for divorce from Kris on October 31st LAST YEAR ... and the ex-couple is STILL battling it out in court ... with no end in sight.