Since Sports Illustrated just celebrated the 50th anniversary of its annual swimsuit issue, EnStars compiled a list of some of the best covers to date.

Several iconic models – Christie Brinkley, Tyra Banks and Heidi Klum – made our list as well as some newer beauties like Kate Upton and Marisa Miller.

Upton, who graced the cover two years in row in 2012 and 2013, revealed that she wasn’t so pleased with herself after her first issue was released.

“After my first Sports Illustrated cover, I felt terrible about myself for a solid month. Every single guy I met was either married or about to be married, and I felt like I was their bachelor present or something. I'm not a toy, I'm a human. I'm not here to be used. I am a grown woman, and you need to figure your sh-t out,” she told Elle magazine.

In February, the 2014 cover will be revealed, but in the meantime scroll through the gallery above to see ones from the past.