The Kardashian family helped the publication celebrate its big milestone by posing for a stylish 16-page spread.
Kris Jenner and daughters Kim, Khloe and Kourtney Kardashian and Kendall and Kylie Jenner came together for their first joint shoot in over four years.
The ladies, who were dubbed "America's First Family" by the mag, looked gorgeous in matching white button-downs and black heels.
The famous family is clearly proud of the photos -- they each took to Instagram to plug their spread.
"Happy 50th birthday @cosmopolitan!!!" Kris wrote. "So honored to be on the November cover with my girls!! #cosmopolitan."
"We're so excited to reveal our November @Cosmopolitan cover in honor of Cosmo's 50th birthday!" Khloe added. "Make sure to follow @Cosmopolitan for behind-the-scenes photos from the shoot and look for the issue everywhere in stores next week!"
"No one could have predicted the Kardashians' and Jenners' success," Ryan Seacrest told Cosmo. "But when you spend time with them, what resonates is the family unit. There are so many things about them that are glamorous, crazy, and unlike our lives, but the sense of family is universal."
He continued, "They love and stand by one another no matter what. Their unvarnished candor reveals how close they really are."
See the full Kardashian spread in the November 2015 issue of Cosmopolitan, on newsstands Oct. 13.
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