In docs obtained by ET that were filed at Georgia's Fulton County Superior Court on Monday, Hartwell claims the marriage is irretrievably broken with no possibility of reconciling.
Pulliam, 37, shared on Instagram last week that she's pregnant with a baby girl. "Surprise!!! We have a new addition coming soon," she wrote.
Pulliam and Hartwell, 38, announced they were getting married on New Year's Eve, and, according to documents, were officially husband and wife on Jan. 2. "Happy to spend not only my new year but my life with this guy!!!" the actress shared. "#BlessedBeyondMeasure."
“It was a great time,” Hartwell said on Pulliam's podcast, Kandidly Keshia, back in January. “Both of our dreams came true that day.”
Pulliam is best known for her role as Rudy Huxtable on The Cosby Show, while Hartwell was on The Real Housewives of Atlanta in 2008.