The Summer Games are underway, and we're seeing a lot of familiar faces. From tennis pros to stellar swimmers, many of the world's greatest athletes have also graced the pages of SI Swimsuit. 

Soccer star Alex Morgan? She's been known to pose in nothing but body paint. Hurdle master Michelle Jenneke? She looks as natural in a bikini as she does in track shorts. 

So as you continue to cheer on Team USA for the next week and a half, be sure to take note of our formerly bikini-clad models who also happen to double as some of the strongest and most fierce competitors in the world! 

See our favorite photos of past and present Olympians in SI Swimsuit!