Upton's first apparition was lend to her in 2011. Her impressive debut earned her our coveted Rookie of the Year honor.
She went on to land on the front cover back-to-back years in 2012 and 2013, then featured on a flip-side cover in 2014.
Kate Upton is back and sexier than ever.
Along with Upton, those featured in this year's Sports Illustrated Swimsuit Edition include Hannah Davis, who posed while pregnant with Derek Jeter's baby.
"It's a full circle moment for us". These are things that really bring joy into the world. The covers have been revealed last night on Jimmy Kimmel Live. Nearly overnight, the trending topic became Kate Upton Nude, Kate Upton Naked, or Kate Upton Sex Tape.
The Sports Illustrated Swimsuit Issue is always a big deal. The 23-time Grand Slam victor positively slays when showing off boobs, booty and muscles in this sexy shoot, while bringing her ongoing message of body confidence to those who don't fit into the Upton or Palvin mold.
Kate Upton is known for seriously working out. Perez Hilton even made a breakdown about Upton and what she wore.
But despite its reputation, the editor of the annual issue is speaking out about body diversity. And this will also bring more joy.
Williams won her record-breaking 23rd Grand Slam singles title in Melbourne in January - breaking the tie she held with Steffi Graf for most number of Grand Slam singles titles in the Open Era. The fun continues on Saturday with a lineup of local Houston musicians and a headlining performance by Grammy Award-winning producer and DJ Diplo.
Two years ago, Williams garnered the Sportsperson of the Year title from the brand, so she's absolutely no stranger to gracing Sports Illustrated's pages.
Also in the issue is Hannah Jeter, 26, who just announced her pregnancy this month.
The magazine had three covers in 2016 featuring Ashley Graham, Ronda Rousey and Hailey Clauson.
But here's the kicker: Fans of Upton's body get not just one, but three SI covers to gawk at this year. "Welcome back, @KateUpton! Follow the link for more photos and video http://on.si.com/2lfRkbl", the official Sports Illustrated Swimsuit account tweeted.
Sports Illustrated's swimsuit issue was first created in 1964 to boost sales, but many people now find it unbelievable that it still exists, seemingly objectifying women just as much as many now defunct lads mags did.