As part of the fifth annual issue, which features several nude male and female athletes, the 34-year-old volleyball player posed completely in the buff both at the end of her third pregnancy and nine weeks after giving birth to daughter Scout.
"I am so happy and relieved that people are receiving my pictures so warmly," Jennings told People. "I didn't realize how vulnerable I'd feel upon the release of the photos ... I am happy and I am proud."
Some of the other athletes featured include Washington Wizards player John Wall, San Francisco 49ers quarterback Colin Kaepernick, motocross racer Tarah Gieger and 77-year-old pro golfer Gary Player.
See a gallery of their shoots here.
What do you think of Jennings' pictorial?