These two celebs may be sister-in-laws soon, thanks to Rob Kardashian, but let's not forget they were friends long before Chyna's romance with Kim's brother. Let's take a look back at these gal-pals' friendship from way back when...
Prior to tying the knot, Kim enjoyed a girls' day with Blac, which included getting their brows done in LA.
Kim proved that they were "getting right for the new year" by posting photos showing off their killer figures on Instagram.
The duo were known to work up a sweat together, and even attended Barry's Bootcamp in West Hollywood together.
Blac Chyna and ex Tyga (who is now dating Kylie Jenner) even attended Kimye's lavish nuptials in Italy. Chyna posted the photo with the newlyweds on Instagram and wrote, "Mr. & Mrs Kanye West .... Congrats Kimmy muahhhhh !"
The two gal-pals flashed their bare faces for the Gram to celebrate "Yay Day."
NEXT GALLERY: Rob Kardashian & Blac Chyna's cutest pics