Martha Stewart made history as the oldest woman to appear on the cover of Sports Illustrated’s Swimsuit issue, and she's opening up about how she got into shape for the photoshoot. "I [only] had two months to get ready," Stewart said at a Las Vegas fashion event via The Hollywood Report. "So let’s just say I’m now an avid Pilates fan." Stewart, 82, posed in daring swimsuits as she graced the Sports Illustrated cover and previously revealed her wellness regimen for the major project.