Kourtney and Addison pose together backstage in June 2021.
"You know what this means," Addison posted in June 2021 with a cute backyard snapshot.
The BFFs look adorable in identical denim shorts, white tank tops and black Converse.
Next to this May 2021 selfie, Kourtney wrote, "shop till you drop."
Kourtney and Addison documented a late-night swim in November.
The besties enjoy a getaway to NYC in October 2020.
A mini stoop photoshoot.
Kourtney and Addison soaked in some sun for this bikini-clad pic.
BFFs Kourtney and Addison had a perfect ocean view in this sunny image.
The Poosh founder and the TikTok star stunned while posing next to a Grand piano.
For this photo booth pic, Kourtney, Addison and Reign Disick stuck out their tongues.
Although Reign kept things silly in this photo, Addison and Kourtney opted for sweet smiles.
In this photo, Kourtney and Addison took a classic mirror selfie.
Kourtney Kardashian and Addison Rae soaked up the sun as they headed to the water for a surfing adventure.
Another shot from Kourtney and Addison's beach day.
Kourtney and Addison made sure to soak up some sun before summer officially ends on Sept. 22, as the Poosh founder pointed out in her Instagram caption.
Following Miley Cyrus' performance of her new single "Midnight Sky" at the 2020 MTV VMAs, the singer recreated the set in a truck that's being driven around L.A. Kourtney and Addison both took part in the fun promo!
Miley's VMAs performance paid tribute to her 2013 song, "Wrecking Ball." She was clearly thrilled to see Kourtney and Addison take part in the fun, commenting "Queeeeeeen! Yasssss" on Kourtney's Instagram post and multiple heart emojis on Addison's.
"today is a beautiful day," Addison wrote on Aug. 27 alongside a new photo from her and Kourtney's Palm Springs trip.
New day, new bikini!
Kourtney and Addison both shared a number of photos from their late August getaway to Palm Springs, including this bikini-clad snapshot.
The second photo in a series that Kourtney uploaded along with the simplest of captions: a mermaid emoji.
More Palm Springs fun, courtesy of Addison!