"Anything in life that is worth having takes hard work. There are no secrets," stuff.co.nz quoted her as telling the British edition of InStyle.
"You just have to work hard and you have to sacrifice. Some people are just really lucky and I can't stand those people! But most of the time you have to work hard," she said.
"I give myself moments where I can indulge in whatever I want... Then I try to reel it in. I love French fries. They're my weakness," she added.