Move over, booty — boobs are having a moment.

photo: Giphy

Last year, celebrities couldn't stop Instagramming their best belfies — aka "butt selfies." 

This year, however, more and more stars and influencers are shifting the focus to their chest. 

But unfortunately, Instagram has strict nudity policies, so celebs have to be careful not to let the nip slip. To avoid going full-nipple, ladies are strategically lifting up their shirts and swimsuits juuuuuust a little bit to reveal their glorious underboobs

(Take that, sexist social media policies.)

Here are 12 celebrities who shamelessly celebrate the lower half of their busts:

1

Ashley Graham

Ashley Graham underboob
photo: Instagram/@theashleygraham

Graham knows the power of a subtle underboob.

2

Bella Thorne

Bella Thorne underboob
photo: Instagram/@bellathorne

Thorne turned her T-shirt into an underboob-worthy crop top.

3

Ariel Winter

Ariel Winter underboob
photo: Instagram/@arielwinter

Winter didn't let slut-shamers stop her from wearing this sternum-showing body-con dress to her graduation party.

4

Kim Kardashian

Kim Kardashian underboob
photo: Instagram/@kimkardashian

Kim Kardashian is basically Queen Underboob.

5

Rihanna

Rihanna underboob
photo: Instagram/@badgalriri

RIhanna's underboob-revealing top perfectly complements her sternum tattoo.

6

Fluvia Lacerda

Fluvia Lacerda
photo: Instagram/@fluvialacerda

Lacerda showed a little underboob to announce she was going to be Playboy Brazil's first plus-size cover star.

7

Kylie Jenner

Kylie Jenner underboob
photo: Instagram/@kyliejenner

Jenner is known for posting her fair share of fearless underboob selfies...

8

Kendall Jenner

Kendall Jenner underboob
photo: Kendall Jenner Snapchat

.. .but sorry, Kylizzle. Apparently underboob is "Kendall's thing."

(How Regina George of her.)

9

Hunter McGrady

Hunter McGrady underboob
photo: Instagram/@huntermcgrady

"YOU. ARE. WORTHY," McGrady reminded her followers in this empowering underboob photo.

10

Amber Rose

Amber Rose underboob
photo: Instagram

Rose celebrates every part of her body — including her underboob.

11

Jennifer Lopez

J Lo underboobs
photo: Instagram/@jlo

Lopez, like, invented the underboob.

12

Nicki Minaj

Nicki Minaj boob out
photo: Instagram/@nickiminaj

The ONLY thing better than a shameless underboob? A shameless full boob, à la Minaj.