The phrase "swimsuit issue" typically refers to a magazine publication or special edition featuring photographs of people, usually models, wearing swimsuits. Full definition
Nina Agdal, one of three Sports Illustrated Swimsuit issue cover models this year, turned 22 today (March, 26th). (diehardsport.com)
Serena Williams is having a year like no other: She won her 23rd Grand Slam tournament in January, appeared in the Sports Illustrated Swimsuit Issue in February, and just announced on Snapchat that she and fiancé Alexis Ohanian have a baby on the way. (health.com)
Well, not just like us, but more like what we think we'd be like if we were also rich and famous cookbook authors who are also Sports Illustrated Swimsuit Issue cover models. (mommyish.com)