Justin Bieber is the first to break 'No Selfie' rule at 2015 Met Gala

Justin Bieber, Kim Kardashian Break Selfie Ban at Met Gala
Justin Bieber, Kim Kardashian Break Selfie Ban at Met Gala

While taking selfies is the most important thing in the world to some stars, guests attending the 2015 Metropolitan Museum of Art's Costume Institute gala were banned from snapping them during the event.

But what do the rules of mere mortals mean to celebs? Not a whole lot, apparently, because plenty of selfies were taken anyway. So who was the first to break the ban? Obviously it was Justin Bieber.

VIDEO: 6 Met Gala Moments That You Just Need to Remember Again

The young singer got close with some of his superstar friends who were also attending the event and managed to snap a few pics to commemorate the event.

Here is his with his pal, supermodel Cara Delevingne...

And here he is with ARTPOP artist Lady Gaga...

To Bieber's credit, those stars were also breaking the rule, so he's not the only one. In fact, after posing with Bieber, Delevingne and a whole bunch of other famous ladies piled into the bathroom to take selfies in the mirror like it was a high school prom.

The rule, which was allegedly imposed by Vogue editor-in-chief, Anna Wintour and the Metropolitan Museum of Art, clearly wasn't very effective. For it to really work, the event would have had to ban phones, but then no one would have shown up.

NEWS: Kim Kardashian Is Nearly Nude at 2015 Met Gala

And can you blame them for wanting to take group pics when everyone was looking great and wearing the best clothes they'd be dressed in all year?

Just look at Bieber's amazing suit jacket! It's covered in golden dragons in honor of the gala's 2015 theme "China: Through the Look Glass," which is meant to be a celebration of China's artistic fashion legacy.

Getty Images

It was a chance for Beiber to look cool and show off his cool new blonde hair 'do. The guy was going to snap some selfies.

PHOTOS: The 9 Best Dressed Stars at the 2015 Met Gala

Amazingly Kim Kardashian actually managed to refrain from posting selfies for a while, until she ran into Lady Gaga and Cher, who Kim said was the inspiration for her totally see-through gown.

The annual Met Gala is the one of the biggest events in fashion every year, and often finds itself at the center of industry controversy and commentary. Check out the video below for a look at six of the biggest Met Gala moments from recent years.

Also, check out the best and worst dressed from the Met Gala:

More from AOL.com:
Amy Adams marries Darren Le Gallo after being engaged for 7 years
See why Adam Levine yelled at 'The Voice' audience
Kim Kardashian is nearly nude at 2015 Met Gala