The size 14 model posted a picture of her magazine cover on Instagram, dedicating it to "every woman who felt like she wasn't lovely enough because of her size".
"It's a wonderful time in history", said Emme, known as America's first plus-size model.
In another break with tradition, plus-size model Ashley Graham also makes the front cover, looking in a purple stringed bikini.
In her cover, Rousey is sporting a one-piece bathing suit that has been painted on - similar to the one she was spotted wearing in a preview of the issue last month. "I call myself a body activist for a reason".
The idea was hatched to bring a much "more inclusive" offering to the table for 2016, and of course, to offer three gorgeous girls in place of the usual one. There are editions featuring Ronda Rousey and Hailey Clauson. "There are 16 million women who actually read the issue, and we're letting these women know there's no such thing as flawless", she said. She possesses a spirit bigger than the space around her, and it is both infectious and inspiring. "And now, I can look at her and say you are bold, you are brilliant, you are handsome, and cellulite, I love you".
Swimsuit fans looking for a more traditional cover girl need not worry because 20-year blonde bombshell Hailey Clauson is here to save the day. Learn a little about her and you'll appreciate her beauty even more.