The X Factor judge, who became a mum for the first time in July, told UK magazine Glamour: 'I definitely haven't lost all of it [the baby weight], because I haven't been exercising. I haven't had the time or the energy.
'When I got pregnant, I started eating sweet things for the first time and I haven't stopped. I read this article that said I was on turkey broth and crazy exercising every day.
'I don't eat meat and I've been eating lemon pie. So in truth, that's not my focus.'
Minogue, 38, added that her partner Kris Smith has already set his sights on having another baby, despite the fact that Ethan is barely three months old.
She said: 'Kris [has] put that on the shopping-list: another baby. Every time I ask [how many children we’re going to have], it goes up. We bought the seven-seater family car the other week. He's looking at it and is ready to fill it.'