The Frozen actress is featured in the mag's annual nudes issue, wearing nothing but her birthday suit on a sandy beach.
"This is the first interview I've ever done where I'm not wearing panties. Lucky you," she joked at the shoot. But she's serious about practicing what she preaches when it comes to self-acceptance.
"I talk a big game about being comfortable no matter my size," she says. "I wanted to put my money where my mouth is."
Jenna Dewan Tatum and Minnie Driver also get completely naked for the mag, which is a little ironic considering Minnie recently quit Twitter after people's comments about her bikini body. Way to get the last laugh!
Gallery | 10 Fun Celebrity Moms!