Today, the Jennifer's Body actress shared some behind-the-scenes Polaroids on Instagram from a joint photo shoot with Kardashian, during which the two posed in their underwear for a SKIMS campaign published last September.
In the photos, snapped by hairstylist Andrew Fitzsimons, Fox and Kardashian are captured pressing their faces against each other, straddling one another, and modeling black pieces from Kim Kardashian's coveted shapewear line.
"BTS of my skims shoot with Kourtney," Fox wrote in the caption. "Should we start an OnlyFans?"
The friends share a connection through their significant others: Kardashian's husband, Travis Barker, and Fox's fiancé, Machine Gun Kelly, born Colson Baker. Barker and Baker have been longtime friends and collaborated on Tickets to My Downfall, Baker's album that dropped in 2020.
Fox and Kardashian previously joined forces to present their beaus' dual performance during the 2021 MTV VMAs, where Fox memorably introduced them, "New York, I need you to get extra loud for our future baby daddies."
Fox and Baker were also among the star-studded guests at Kravis's luxe Italian wedding this past May. For the flashy occasion, the couple wore their best goth formalwear. The actress turned heads in a dramatic black gown from Zuhair Murad's fall/winter 2021 collection, which featured a strapless corset bodice made of beaded tulle and a shiny liquid-taffeta skirt with a thigh-high slit. Meanwhile, the rapper looked suave in a metallic blue leopard-print suit from Dolce & Gabbana, which he aptly paired with a black shirt and layered short necklaces.