Slimm popped the question to the 46-year-old 'Curb Your Enthusiasm' star while the two were staying at the Ritz Carlton in South Beach, Fla., on Dec. 26.
"I waited for God to send me a man, and he's a good Southern man," the Indiana-bred actress said of Slim in a previous interview.
Fox's rep confirmed the engagement to the New York Post.
This will be the second time down the isle for Fox, who was married for four years to aspiring musician Christopher "Sixx-Nine" Harvest. The two divorced in 2002.
The actress was involved in a high-profile relationship with rapper 50 Cent in 2003 and also dated Washington Redskin player Darnerien McCants.
During an appearance last month on the 'Wendy Williams Show,' Fox spoke about planning to have children with Slimm. Though she said she's not opposed to adopting, Fox plans to meet with her doctors about the best ways to conceive.
"I'm very fertile, so I don't think I'll have a problem," she said.
Fox confessed she and Slim plan to explore parenthood once she wraps production on her touring play, 'Cheaper to Keep Her' with Brian McKnight, Jonathan Slocumb, Karen Malina White and Christian Keyes.
"We're planning after the tour to do the thing," she continued. "If I could get a boy and a girl that would be fabulous, and I'm shutting down shop and shipping these eggs off to Africa somewhere."
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