Get ready for the best R&B album of all times.
R&B singer Mary J. Blige just filed from divorce from her husband of 12 years Kendu Isaacs...
Blige just filed docs seeking to end her union from Martin "Kendu" Isaacs -- who she married back in 2003.
Blige lists the date of separation as "to be determined" -- unclear why.
Blige cited irreconcilable differences as the reason for the split. They couple has no children together.
There is one interesting note ... Blige is asking the judge to block Isaacs' ability to get spousal support. The document does not say if there is a prenup.