Kate Upton is making headlines again, but this time, it's for her bare bum. The 23-year-old model shared a snap on Instagram this week showing off her curves and her bare butt.

Captioned, "Happy Sunday! #buttday #bruceweber #sundayfunday," the photo features Kate Upton strolling around a garden sporting a pleated sheer burgundy dress.

Although her face isn't exactly in frame, her naked bum indeed speaks volumes. But Kate Upton hasn't been the only celebrity baring butts on social media.

Khloe Kardashian recently made the cover of Complex magazine. The "Keeping Up With The Kardashians" star posted a photo of her cover on her Instagram page that featured her wearing a mesh and leather paneled bodysuit, baring her famous derriere.

Earlier this month, Justin Bieber posted a pic of himself on a yacht, wearing nothing but his birthday suit. The "Where Are U Now" crooner has since taken down the post, but thankfully Miley Cyrus posted the same pic, except with some butt enhancements.

Speaking of Miley Cyrus, the 2015 MTV VMAs host also shared a cheeky snap on Instagram. A close up shot shows Miley pointing an Australian flag tattoo on her bum; "Always had a thang 4 OZ," she wrote.

It seems as though Miley Cyrus has a thing for booties. After Rihanna released the music video for her single, "B-ch Better Have My Money," Miley posted a screenshot of one of the frames from the music video.

It highlighted Rihanna's bum in a thong bikini as its submerged underwater. Miley captioned the photo, "Had a dream I took [mushroom emoji] w bad gal! Trippppy a$ b-ch!"

Supermodel Chrissy Teigen also posted a butt pic quite recently, showing off her perky cheeks also in a thong swimsuit.

Not only that, but Chrissy Teigen also posted a butt pic of her hubby John Legend.

Is baring one's bum becoming a trend? Only time will tell.