The 'Something Borrowed' actress, who stuns on the cover in a black and gold dress, stressed her desire to be a good role model to young women, reported Us magazine.
"If there is one thing I will never have, it is an eating disorder," the mother of two said.
"I won't have girls -- even if it is just one or two who care -- thinking that. Because it is a serious sickness, not something to plaster on the cover of a magazine. And I am the opposite," she added.
The 35-year-old daughter of Goldie Hawn also addressed how, after gaining 70 pounds during her first pregnancy, she realises how important it is to feel loved.
"I want girls to love themselves. I want them to feel good about who they are... The thing is, I'm lucky because I was loved (during that time). But I have seen so many young women who can't feel good about themselves because they just don't have that love."