Speaking of back, Kim has taken to social media to post some pretty revealing pictures of her very famous derriere.
The first was a controversial photo of herself in a white swimsuit, which she posted back in October. The photo drew a lot of criticism for the new mom, with fans saying she shouldn't be posting such revealing pictures anymore.
During an appearance on The Tonight Show With Jay Leno, Kim called the swimsuit selfie "my big middle finger to the world."
Well, apparently, Kim has decided to flip us the bird again.
In this new photo, the reality star had her friend Blac Chyna joining her for the sexy selfie.
First, Kim posted a photo of the scantily-clad friends from the front with the caption "getting right for the New Year," and then followed with a gratuitous butt shot...because why not?
What do you think of Kim's sexy selfies? Should she stop posting them now that she's a mom or, since she's obviously still got it, should she just keep flaunting it?
Gallery | Kim Kardashian's Sexiest Instagram Snaps