She added: "Every day I'd look at myself and just think, 'Jesus Christ, I let myself go'. I couldn't run and all I was doing was eating. Everyone knows I didn't look like I used to any more, I've never been this fat! I want people to know why I've done what I've done. It's not
because I'm unhappy, I've never been happier - I'm in a loving relationship. But I just want the old me back."
Katie, who rose to fame as a UK glamour model, admits her fiance Carl Woods was "upset" after seeing her post-surgery.
Speaking to The Sun newspaper, she said: "Poor Carl said it was the worst thing he'd ever seen — he thought I was dead ... He said there were loads of tubes and he was upset as I looked completely helpless. He said it was like watching a piece of meat being carved up.
"But I'm loving it. I can't see a difference yet as everything is still so swollen but I had my hair extensions done there too and now I'm feeling like the old Katie."