updated 02/13/2014 AT 8:00 PM ET
•originally published 02/13/2014 AT 9:30 PM ET
Talk about a triple threat!
Wearing only barely-there bikini bottoms, the beauties get cheeky in the golden anniversary issue as they turn to the camera and show off their perfectly toned backsides.
Shot in the sunny Cook Islands, the cover is in stark comparison to the arctic temperatures last year’s cover girl Kate Upton had to endure.
While Teigen, 28, and Agdal, 21, are veterans of the annual edition – making their debuts in 2010 and 2012, respectively – 28-year-old Aldridge is a newcomer.
“I feel so lucky. It’s the perfect introduction,” Aldridge, wife of Kings of Leon’s Caleb Followill and mom of a 19-month-old-daughter, Dixie, told PEOPLE. “It’s just such a dream come true, and to just be a part of the 50th anniversary cover is just insane. I think I was in total shock when I found out!”
Adds Agdal, “I’m speechless. It was my goal. I couldn’t be happier to be on this year’s cover. Absolutely amazing!”
As for Teigen’s reaction: “I started crying. It was a weird shaking [and] trembling, because I didn’t believe it,” said John Legend’s wife, who like Aldridge, first called her husband to share the good news.
The 2014 Sports Illustrated Swimsuit Issue’s 50th anniversary edition goes live across the Web, mobile and tablets, and hits newsstands on Feb. 18.