We don't know what this onesie fad is all about, but celebrities really seem to love wearing these comfy, cozy and fashionably inept uni-suits. Celebrities like Miley Cyrus, Macklemore, Rihanna, Justin Bieber, Beyonce plus many, many more have all rocked onesies in the public eye, whether it's for a video shoot or just for lounging.

Check out these pictures of stars wearing onesies, and let us know what you think of this "trend" (if you can even label a Snuggie-esque slip-on as a trend) in the comments below.

Miley Cyrus

Twitter
Twitter
Twitter

One Direction

PacificCoastNews.com
PacificCoastNews.com

Perrie + Jade of Little Mix

PacificCoastNews.com / Twitter

Rihanna

Facebook
Facebook

Justin Bieber

Instagram
Instagram

Beyonce

iam.beyonce.com
iam.beyonce.com

Nathan + Tom of the Wanted

Twitter / Tumblr

Ariana Grande

Twitter / Tumblr

Katy Perry

Tumblr

Ed Sheeran

Twitter

Big Time Rush

Instagram

Azealia Banks

Facebook

Jessie J

Instagram

Olly Murs

Twitter

Macklemore

YouTube

Rita Ora (aka the Winner for Best Onesie)

Twitter