The 36-year-old former Spice Girl gave birth to her third daughter last month and has become the new face of diet company Jenny Craig as she stars her baby weight loss regime.
'When I get pregnant, I don't work out and I don't watch what I eat,' she told Life & Style magazine.
And the Australia X Factor judge said that the new lifestyle seems to suit her lifestyle.
'I like the way they work,' she said. 'Jenny lets you eat things you like but works with you on portion control and what's in it.'
Although husband Stephen Belafonte is a huge fan of her 'curvalicious' figure, she said she said, 'It would be nice to get back to the weight I was when I did Dancing With The Stars.'