Sports Illustrated came under fire on Monday for using Kim Petras, a transgender female pop star, as one of its cover models for the Swimsuit Edition. It was Petras’ first time on the cover of the Swimsuit Edition. Petras joined Martha Stewart, Megan Fox and Brooks Nader as the other cover models for this year’s magazine. "There is no theme [to this year’s issue]—rather, there is a vision, a sentiment, a hope that women can live in a world where they feel no limitations, internally or externally," SI Swimsuit Editor-in-Chief MJ Day said. "But the absence of a theme is...