The couple were divorced along with 36 other couples at 10.50am during a central London hearing. However, neither of them were present in court.
Just minutes after they were official no longer husband and wife, Kym tweeted that she was having "the best morning".
"I have literally had THE best morning with my poll. Looking forward to mummy and Polly shopping now! Need to get a new top," she wrote.
After months of rumours about their marriage - including a trial separation - Kym began divorce proceedings back in October, citing 'EastEnders' star Jamie's "erratic behaviour" as the reason for their split.
It came as she was accused of having an affair with her former 'Coronation Street' co-star Oliver Mellor, but she denied the reports.
The couple have a two-year-old daughter, Polly, together, while Kym has two teenage children from a previous relationship.
This is Kym's second divorce, as she split from former 'EastEnders' star Jack Ryder in 2008 after less than six years of marriage.