Taking to her Twitter page, the 36-year-old wrote: 'Fked up,' followed by 'Officially Fked Up Beyond All Radio.'
The star then revealed: 'Proud to be a part of the @FubarRadio revolution and getting behind the mic' she wrote.
Katie will be joined by Mark Dolan every Tuesday between 10am and 1pm for the show.
'You own everything that's happened to you. Tell your stories. If people wanted you to write warmly about them, they should've behaved better.'
The former glamour model has been keeping her 1.9 million followers updated with what's going on in her life since her shock split from husband Kieran Hayler last month.
Taking to her page on May 7, Katie revealed that her toyboy lover had been having a 'full blown sexual affair' with her 49-year-old best friend, Jane Pountney.
Shaming her pal as a 'sl**' and a w****', Katie immediately announced she would be divorcing her 27-year-old husband, and lamented the fact he had done this to her at six months pregnant.
Yesterday Katie shared a series of inspiring messages via her YouGossip page, defending herself against critics who have slammed her public handling of the affair.
The piece read: 'You own everything that's happened to you. Tell your stories. If people wanted you to write warmly about them, they should've behaved better.'
She also reminded herself: 'Loyal people still exist,' obviously in reference to the betrayal from her best friend and lover.