MJ Day

MJ Day is an American magazine editor who is the editor-in-chief of the Sports Illustrated Swimsuit Issue, which she has led since 2014.

Overview

Day grew up in Ocean County, New Jersey and graduated from the University of Mary Washington in Fredericksburg, Virginia in 1997. She was an intern for InStyle, a fashion magazine, before being hired as an editorial assistant for the Sports Illustrated Swimsuit Issue in 1998. In 2013, she supervised the launch of the website Swim Daily; it promotes the swimsuit issue and its models year round. She became the swimsuit issue's editor-in-chief in 2014.

During her tenure, the swimsuit issue has introduced a greater range of body types and emphasized body positivity and women's empowerment. Robyn Lawley was the issue's first plus-size model in 2015. In the 2017 issue, Nina Agdal wore a tank top reading "A Woman Does Not Have to Be Modest to be Respected", while in 2018, models chose their own words and messages to portray in body paint in a spread. Leyna Bloom was the magazine's first openly transgender cover model in 2021.