Kendall Jenner & Francisco Costa
Kendall (the face of Calvin Klein, FYI) and the brand's creative director Francisco Costa squeezed in a little bonding time at the 2015 Tony Awards.
Kim Kardashian, Olivier Rousteing & Kendall Jenner
Balmain Creative Director Olivier Rousteing has a fun, work-meets-play relationship with sisters Kim Kardashian and Kendall Jenner, who have called themselves part of the "Balmain Army."
Keira Knightley & Karl Lagerfeld
Lagerfeld has declared Knightley one of his favorite muses, and continually dresses the actress (and Chanel ambassador) in custom gowns for the red carpet.
Valentino Garavani & Anne Hathaway
The designer and actress have developed such a close relationship that he personally designed Anne's airy, pale pink wedding gown for her nuptials to Adam Shulman.
Stella McCartney & Gwyneth Paltrow
The gal pals partnered on a capsule apparel collection for Gwyneth's Goop website in 2013.
Tom Ford & Julianne Moore
The iconic designer and director loves Julianne so much that he cast her in a starring role for his debut film, A Single Man.
Eva Longoria & Victoria Beckham
These ladies are not only good friends but style soulmates too.
Rihanna & Adam Selman
The designer responsible for RiRi's naked dress is also one of the songstress' closest friends.
The Wests & Riccardo Tisci
The Givenchy honcho is a close friend and confidant to Mr. and Mrs. West.
Renee Zellweger & Carolina Herrera
Really, does Renee wear anyone else? The actress' longtime friendship and red carpet relationship with Herrera is one for the ages.
The Beckhams & Christopher Bailey
The Burberry CEO is a family friend to Posh and Becks, as well as a Romeo Beckham fan: The tween has starred in a series of campaign ads for the British luxury label.
John Galliano & Kate Moss
The bad boy and girl of the '90s high fashion scene made haute couture fun for more than a decade.
Lady Gaga & Donatella Versace
A pair of platinum blonds in some seriously slinky dresses: The Gaga-Donatella version of two peas in a pod.
Miley Cyrus & Jeremy Scott
This wild duo has collaborated both on the runway and off.
David Oyelowo & Georgina Chapman
The Selma actor and Marchesa designer's friendship dates back to their days as schoolmates in England.
Michael Kors & Heidi Klum
These two are co-hosts and BFFs in one.
Sienna Miller & Matthew Williamson
The British style maven and her fashion designer bestie were all kisses and smiles in London during Fashion Week.
Marc Jacobs & Sofia Coppola
Jacobs and Coppola are good buddies and great collaborators: She directed a commercial for his Daisy perfume campaign, and has even starred in ads for the fragrance. (Jacobs, meanwhile, has dressed the acclaimed director for the Oscars.)
Diane Kruger & Jason Wu
What better way to seal a friendship than to design a handbag for your bestie's eponymous brand?
Claire Danes & Zac Posen
The actress is a constant red carpet companion of Posen.
Kate Moss & Vivienne Westwood
Hugs are to be had between these British style icons-cum-BFFs.