The 37-year-old star’s username is now @msm4rsh and her moniker is listed as her former moniker.
The name change comes shortly after she filed for divorce from ‘EastEnders’ actor Jamie Lomas, citing unreasonable behaviour in October 2013.
Her Twitter update comes shortly after the star – who has over 370,000 followers on the social networking site – asked ‘Coronation Street’ bosses to credit her role as Michelle Connor as Kym Marsh rather than Kym Lomas in the soap.
A source told the Daily Mirror newspaper: “It demonstrates it’s all over between her and Jamie. The credit thing on Corrie was a huge statement and now Kym has followed it up with this.
“She reckons there is no way back. Her mum and dad and close friends have been terrific support for her while all this has been going on and they will back Kym whatever she decides to do.”
Jamie is believed to be planned to file his own divorce claim after alleging Kym – who he married in September 2012 – cheated on him with her former ‘Coronation Street’ colleague Oliver Mellor, who played Dr. Matt Carter.