Ashley Graham's butt
photo: Sports Illustrated

The butt selfie (or rather, the "belfie") trend first exploded a few years ago, so it's safe to say celebrities had their booty-baring poses down by the time they rang in 2018.

A-listers have spent the first part of the new year showing off their acquired belfie skills on Instagram, and although we're only a few months into 2018, these belfies are already giving the belfies of 2017 and 2016 a run for their money!

Tess Holliday started 2018 off right with a snapshot of her nude backside. 

Tess Holliday's naked butt
photo: Instagram/@tessholliday

Her husband also posted this same sizzling photo on his Instagram feed. 

(Can you say #RelationshipGoals?)

Ashley Graham served up her best belfies for her spread in this year's Sports Illustrated Swimsuit issue.

Ashley Graham's bare butt
photo: Instagram/@theashleygraham

Damn, Graham!

Tabria Majors pulled a Graham and promoted her own appearance in Sports Illustrated with (what else?) a butt selfie.

Tabria Majors' booty
photo: Instagram/@tabriamajors

Peep the pockets on her booty.

Kim Kardashian has spent the first part of 2018 doing what she does best: posting belfies. 

Kim Kardashian's butt
photo: Instagram/@kimkardashian

Old habits die hard, am I right?

Ariel Winter used a butt selfie to "wave hello" to her followers. 

Ariel Winter's butt
photo: Instagram/@arielwinter

Hey, girl!

Iskra Lawrence decided she's comin' for the title of Belfie Queen this year.

Iskra Lawrence's butt
photo: Instagram/@iskra

"In Vegas flexin on the gram with my lil back rolls and thick thighs and cel-u-lit.. no airbushin no problem," she wrote on Instagram earlier this year.  

Jordyn Woods doesn't have time for ridiculously airbrushed belfies.

Is Jordyn Woods' butt real?
photo: Instagram/@jordynwoods

(She'd rather post the real deal!)

Is Jordyn Woods' butt fake?
photo: Instagram/@jordynwoods

Woods is blessing our timelines, one belfie at a time!

Hunter McGrady recruited the help of Catherine Li for this scorching butt selfie.

Hunter McGrady's butt
photo: Instagram/@huntermcgrady

Slay, ladies!

Leave it to Danielle Brooks to post a fire beach belfie.

Danielle Brooks in a bikini
photo: Instagram/@daniebb3

Brooks basically lives in her bikini.

Renell Medrano, Kendall Jenner, Bella Hadid, and Justine Skye ditched their tops for their booty snapshot.

Kendall Jenner and Bella Hadid's butts
photo: Instagram/@bellahadid

As friends do.

Gabi Gregg showed off her latest Swimsuits For All design with an adorable belfie.

Gabi Fresh in a bikini
photo: Instagram/@gabifresh

That neon bikini is everything.

Lizzo's belfie made hearts STOP.

Lizzo's butt
photo: Instagram/@lizzobeeating

*checks pulse* 

And remember, it's only April. Just imagine the booty pics that are still to come...

WATCH: We covered our 'flaws' in glitter — Subscribe for more!

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