The model-and-actress – who has 16-month-old daughter Ever Gabo with her fiance Paul Anderson – put on 70lbs while pregnant and admits she found it hard to get back into shape.
She said: "Diet and lots of exercise, I worked my big, little butt off. I do want another baby but not for a little bit."
"I've only just lost all the weight so I want to enjoy my old body for a while before I have to become a crazy alien again."
Milla enlisted the help of renowned Hollywood trainer Harley Pasternak to shed the weight, but admits she found the strict diet plan tough.
The 33-year-old beauty added to Fox News: "It's been a lot of work and I've been working with Harley Pasternak and his 5-Factor program, they actually have diet food sent to my house."
"At one point I just ate oatmeal, salmon and artichokes everyday for a week. It was definitely a lot easier putting it on!"
