The former glamour model announced via Instagram she'll be back on the panel soon after taking time out to focus on her marriage and children.
Katie, 38, stepped down from her role as a panelist in October, saying she needed time away from the limelight to spend time with husband Kieran Hayler and their family.
At the time, Katie said old wounds from Kieran's affair had been reopened while promoting her latest autobiography and that perhaps she hadn't actually dealt with all the emotions of his betrayal as she thought she had.
"My heart is shattered, it's broken. It's nowhere near healed," she admitted.
"We had therapy and I thought I was OK. The past two weeks I've been on my book tour and it's opened up some wounds. It's been awful. I thought I'd dealt with it."
Katie's latest autobiography, Reborn, details the period from when she met to Kieran, including the discovery that he'd been having an affair with her best friend Jane Pountney. Katie was pregnant with Kieran's second child at the time.
"I will never forgive him or forget, but I learned to deal with it," added Katie in October. "My heart is still healing. Someone said it takes five years to heal a broken heart. Is that true? I want to clarify me and Kieran are absolutely fine. We are not splitting, nothing like that. It's just been hard emotionally for us.
"We are going to see a therapist to reassure us we're fine. It's horrible for both of us," she said today. "I'm always like, 'it's fine' and move on to the next thing... It's a relief to me to admit I'm not as strong as people think. Enough is enough. I have to let my barriers down."