Instagram was obsessed with the "belfie" (aka the "butt selfie") in 2016.
That's right — this year's selfie trend was not limited only to the face. Countless celebrities turned around, stuck out their behinds, and somehow wound up with effortlessly perfect (and bootylicious) Instagram posts.
Here are 18 of the best celeb and Instagram influencer belfies of 2016:
Demi Lovato posted this belfie to promote her single "Body Say."
Demi had a spontaneous nude photo shoot for Vanity Fair last fall, which spearheaded her belfie addiction in 2016.
Chelsea Handler used her belfie to make a political statement.
Her ass reads, "Trump is a butt hole."
Ariel Winter got cheeky all summer long.
The body-positive teen loved to show off her curves (namely, her booty!) in naked shorts.
Dascha Polanco took a belfie in a naked bodysuit.
Dascha's naked looks are always on point.
Rihanna mastered the art of the butt selfie.
She captioned this Instagram shot of her backside, "Made in Barbados."
Before she stepped away from Instagram, Kim Kardashian was the ultimate beach BUM.
After her traumatic Paris robbery, Kim stopped posting to social media and subsequently caused a brief belfie drought.
But while Kim was away, Kylie Jenner's butt came out to play.
Kylizzle clearly learned from the best. (See above)
There was no shame in Danielle Brooks' bathroom belfie game.
Danielle is an inspiration to us all.
Model Tess Holliday bared all for this body-positive butt selfie.
Sadly, the model spent most of 2016 having to defend her belfies against Facebook's ridiculous image policies. The social network continually banned her images for being "extremely undesirable."
Fluvia Lacerda, Playboy's first plus-size cover star, recruited a fellow plus-size model for this belfie.
Playboy Brazil picked Fluvia's perfect body for its cover.
Iggy Azalea confirmed that she's ready to leave all of the drama ~behind~ in 2016.
Her ex-fiancé can kiss her butt.
Nobody does the belfie quite like Nicki Minaj.
I mean, have you *seen* her "Anaconda" music video?
Good American squad member Nadia Aboulhosn promoted Khloe Kardashian's denim line with a butt selfie.
However, Khloe's jeans may or may not give you that desired Kardashian ass...
Amber Rose posted this belfie at her annual Slut Walk.
But she announced the event by tweeting a picture of her nipples.
Model Iskra Lawrence proved that the best butt selfies come with a little cellulite.
Iskra will even strip on the subway for a body-pos belfie.
And Ashley Graham blessed our Instagram timelines with this bikini belfie.
Thanks to Ashley's recent Instagram post, the year came to an end... with a rear-end.