steamy swimsuit issue, showed off a rainbow of plus-sized models, moms and entrepreneurs on the poolside catwalk at the luxury Mondrian Hotel on South Beach Saturday.Miami-based actress and model Saje Nicole stunned in a string bikini alongside 57-year-old model Kathy Jacobs, who describes herself on Instagram as the “oldest/shortest Sports Illustrated rookie ever.”Meanwhile, personal chef Chelsea Heath rocked a tan bikini and matching coverup as social media influencer Natalie Mariduena