National Bikini Day with the ladies of SI Swimsuit 2017 - Swimsuit SI(01)

National Bikini Day with the ladies of SI Swimsuit 2017 - Swimsuit SI(01)

Image gallery: Si Swimsuit Nude

Carol Alt, 59, poses topless for Sports Illustrated's 'Swimsuit Icon National Bikini Day with the ladies of SI Swimsuit 2017 - Swimsuit SI Let's hear it for the ladies of SI Swimsuit 2015! - Swimsuit SI