Monica's officially calling it quits with her ex-NBA baller husband, Shannon Brown ... she's filed for divorce.
The singer filed the paperwork earlier this month in Atlanta. Monica and Shannon have a 5-year-old daughter named Laiyah together, and she has 2 sons from a previous relationship with rapper Rocko.
So far there are no details on whether she's seeking child or spousal support ... but we've learned Monica was unsuccessful in sealing the divorce docs.
